Citazione Stile APA (7a Edizione)

Pennings, P. (2006). Doing research in political science (2nd ed.). Sage.

Citazione stile Chigago Style (17a edizione)

Pennings, Paul. Doing Research in Political Science. 2nd ed. London ; Thousand Oaks, Calif: Sage, 2006.

Citatione MLA (9a ed.)

Pennings, Paul. Doing Research in Political Science. 2nd ed. Sage, 2006.