This study aimed to optimize critical thinking by empowering reflective and impulsive students' collaboration, communication, and information literacy skills through information literacy-oriented e-books in STEM-integrated problem-based learning (PBL). The research method used was a descriptive explorative approach. The study subjects consisted of five reflective students and five impulsive students. The measurement of cognitive style used the Matching Familiar Figure Test (MFFT) instrument. Collaboration skills were assessed through observation sheets, critical thinking and communication skills were assessed through student worksheets based on problem-solving tasks, and information literacy was assessed through a questionnaire. The study found that reflective students excelled in critical thinking and information literacy, while impulsive students demonstrated superior collaboration skills. As for communication skills, reflective and impulsive students have different advantages for each indicator of communication skills. This study can conclude that implementing information literacy-oriented e-books through STEM-integrated PBL can optimize reflective and impulsive students' critical thinking, collaboration, communication, and information literacy skills. The implication of this study is the importance of integrating 21st century skills holistically in learning practices, especially in the digital era, to prepare the younger generation to face the challenges of the 21st century.

Global Citizenship Education (GCE) has emerged as a significant area of research over the last decade, reflected by the substantial volume of scientific publications dedicated to the topic. However, a bibliometric analysis of GCE utilizing the Scopus database has not yet been conducted. This study addresses this gap by analyzing GCE-related articles published in Scopus-indexed journals from 2004 to 2024, employing bibliometric techniques and VOSviewer software. A total of 1,075 articles were examined. The results indicate a marked increase in publication volume since 2016, highlighting a growing interest in GCE—notably, the United States and the United Kingdom lead in publications and international collaborations. The journal Globalisation, Societies and Education is the most prolific, with 70 published articles. Prominent authors include Yemini from Israel, with 540 citations, and Goren from the United Kingdom, with 445 citations. Co-citation analysis revealed distinct research interests, ranging from multicultural perspectives and GCE curriculum development to integrating GCE in the digital era and critically evaluating its objectives and challenges. Moreover, a co-occurrence analysis of keywords identified nine primary research topic clusters, including education for sustainable development, cosmopolitanism, higher education, and international education. The insights derived from this study are crucial for scholars and practitioners engaged in GCE, as they emphasize the importance of fostering international networks and collaborative efforts while encouraging the exploration of more inclusive GCE practices in the future.