Pelligrini, Anthony D.
Observing children in their Natural worlds : a methodological primer
Lawrence Elbaum Associates, 1996
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Shaughnessy, John J.
Research methods in psychology
McGrawhill , 1994
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Bordens, Kenneth S.
Research and design methods: a process approach
McGraw-HIll, 2005
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Pittenger, David J.
Behavioral research : design and analysis
McGraw-Hill, 2003
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Qualitative methods in psychology : a research guide
bt Peter Banister ... [and others]
Open University Press, 2006
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