Handbooks of assesment methods for eating behaviors and weight related problems : measures, theory, and research
edited by David B. Allison
Sage, 1995
 Buku Referensi
Anxiety and related disolders : a handbooks
Benjamin B. Wolman, editor; George Stricker, co-editor
John Wiley & Sons, 1994
 Buku Referensi
Corbetta, Piergiorgio, author
Social research: theory, methods and techniques
Sage Publications , 2003
 Buku Teks
Lodico, Marguerite G., author
Methods in educational research : from theory to practice
Jossey-Bass, 2010
 Buku Teks
Population health research : linking theory and methods
edited by Kathryn Dean
Sage, 1993
 Buku Teks
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