Handbook of mixed method in social & behavioral research
Research methods in applied linguistics :quantitative, qualitative, and mixed methodologies
How to design and evaluate research in education
Metode penelitian pendidikan dan pengembangan
Action research essentials
Survey research in the social sciences / edited by, Chaeles Y. Glock
Principles of research in behavioral science
Metode penelitian pendidikan bahasa / Syamsuddin A.R dan Vismaia S Damaianti
Reworking qualitative data / Janet Heaton
Doing educational research a guide to first-time redearchers / Edited by, Clive Opie