This assignment presents an annotated bibliography of six research articles, chosen to represent a range of research methodologies within the field of leadership and management. The introduction provides a rationale for selecting two quantitative, two qualitative, and two mixed methods research articles, highlighting the diversity of approaches in studying leadership. Each article is then analyzed in three paragraphs, first outlining the application of the research, followed by a critical analysis of its methodologies and findings, and finally, summarizing the key takeaways. The articles cover topics such as strategic coherence, leadership practices, big data analytics in facilities management, and performance improvements through strategic trade-offs. The annotation includes a structured APA-style reference and a conclusion that synthesizes the key insights and contributions of the selected articles, reflecting on the strengths and limitations of each research approach and their combined value in advancing leadership knowledge. The research articles are carefully examined to provide a comprehensive overview of research methods, findings, and their implications in the field of leadership and management.