Παραπομπή APA

Pierce,, R. (2008). Research methods in politics: A practical guide. Sage.

Παραπομπή Chicago Style

Pierce,, Roger. Research Methods in Politics: A Practical Guide. London: Sage, 2008.

Παραπομπή MLA

Pierce,, Roger. Research Methods in Politics: A Practical Guide. Sage, 2008.