Wiyogo P. Wicaksono
Development of immunochromatographic strip tests for selective and quantitative detection of melamine
Universitas Indonesia, 2014
 Artikel Jurnal
Neuman, Lawrence W.
Basics of social research: qualitative and quantitative
Pearson New International edition, 2014
 Buku Teks
Creswell, John W.
Research design : qualitative, quantitative, approaches
Sage, 1994
 Buku Teks SO
Neuman, William Lawrence, 1950-
Social research methods: qualitative and quantitative approaches
Allyn and Bacon, 2003
 Buku Teks
Punch, Keith F.
Introduction to Social Research: quantitative and qualitative approaches
Sage, 1998
 Buku Teks