Gaya APA
Forcese, D, P., Richer, S. (1970).
States Of Social Research Contemporary Perspectives .
New Jersey:
Prentice-Hall, Inc..
Gaya MLA
Forcese, Dennis, P., Richer, Stephen.
"States Of Social Research Contemporary Perspectives".
New Jersey:
Prentice-Hall, Inc.,
1970.
Text.