Neuman, William Lawrence, 1950-
Social research methods: qualitative and quantitative approaches
Allyn and Bacon, 2003
 Buku Teks
Neuman, William Lawrence, 1950-
Social research methods: qualitative and quantitative approaches
Pearson/​Allyn and Bacon, 2006
 Buku Teks
Neuman, William Lawrence, 1950-
Social research methods: qualitative and quantitative approaches
Pearson Education, 2014
 Buku Teks
Neuman, William Lawrence, 1950-
Social research methods: qualitative and quantitative approaches
Allyn and Bacon, 2000
 Buku Teks
Punch, Keith F.
Introduction to Social Research: quantitative and qualitative approaches
Sage, 1998
 Buku Teks