Denscombe, Martyn
Research Proposals a Pratical guide
Mc Graw Hill, 2012
Buku Teks SO
Ball, Rodney
The French-speakingg world: a pratical introduction to sociolinguistic issues
Routledge, 1997
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Internet research methods: a pratical guide for the social and behavioural sciences
Claire Hewson...[et al.]
Sage, 2003
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Gillis, Angela
Research for nurses: methods and interpretation
F.A. Davis , 2002
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Hillway, Tyrus
Introduction to research
Houghton Miffiln, 1964
Buku Teks SO