This book explores how research methodologies are rhetorically constructed across disciplines and languages. Focusing on linguistics, literature, and psychology, it examines how scholars organize and communicate methodological procedures using genre-based frameworks. Drawing on Swales’ genre theory and Lim’s move analysis model, the book reveals both shared patterns and disciplinary variations in English and Persian research articles. By uncovering the rhetorical structures underlying methodology sections, this work provides valuable insights for researchers, graduate students, and academic writing instructors. It offers practical guidance for producing clear, credible, and publication-ready research writing. An essential resource for English for Academic Purposes (EAP) and research publication training in global and multilingual contexts.