Research design : qualitative, quantitative, and mixed methods approaches / John W. Creswell
Metodologi penelitian mu'amalah / Aji Damanuri
Disain riset dan teknik penyusunan karya tulis ilmiah / Taliziduhu Ndraha
Introduction to operations research / Frederick S. Hillier, Gerald J. Lieberman
Manajemen penelitian / Suharsimi Arikunto
Survey research in the social sciences / edited by, Chaeles Y. Glock
Principles of research in behavioral science
Menulis ilmiah; metodologi penelitian kualitatif
Metode dan analisis penelitian mencari hubungan / Michael H. Walizer, Paul L. Wienir; alih bahasa, Arief Sukadi Sadiman