Research design : qualitative, quantitative, and mixed methods approaches / John W. Creswell
Handbook of qualitative research / Norman K. Denzin, Yvonna S. Lincoln
Intorduction to social research / Anu Bonar Blalock
Survey research in the social sciences / edited by, Chaeles Y. Glock
Ground rules for social research: guidelines for good practice
Metode penelitian sosial : berbagai alternatif pendekatan / Editor:Bagong Suyanto,Sutinah
Key concepts in social research / Geoff Payne, Judy Payne