Business research methods
Principles of research in behavioral science
Menulis ilmiah; metodologi penelitian kualitatif
Essentials of behavioral research :methods and data analysis
Research methods in psychology :Ideas, techniques, and reports
Petunjuk praktik penelitian pendidikan
Langkah mudah penelitian tindakan kelas sebagai pengembangan profesi guru
Marketing research essentials
Research and evaluation for business
Setting the agenda for American archaeology :the National Research Council archaeological conferences of 1929, 1932, and 1935