Pratt, Brian, author
Choosing research methods: data collection for development workers
Oxfam, 1992
 Buku Teks
Estolas, Josefina V., author
Fundamentas of research
Miranda, 1973
 Buku Teks
Moore, Nick, author
How to do research : a practical guide to designing and managing research projects
Facet Publishing, 2006
 Buku Teks
Rees, Colin, author
An introduction to research for midwives / Colin Rees
Churchill Livingstone/Elsevier, 2012
 Buku Teks
Siswanto, author
Operations research Jilid I
Erlangga, 2007
 Buku Teks
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