An Introduction To Social Research = Pengantar Penelitian Sosial

av Hubert M. Blalock, Jr., Tim Penerjemah Yasogama
Publicerad 1987

Social research methods : Qualitative and Quantitative approaches

av W. Lawrence neuman
Publicerad 2006

Measures of Social Psychological Attitude

av John P. Robinson, Phillip R. Shaver
Publicerad 1980