APA (7th ed.) Zitazioa

Walliman, N. (2016). Social research methods: The essentials (2nd edition.). Sage.

Chicago Style (17th ed.) Zitazioa

Walliman, Nicholas. Social Research Methods: The Essentials. 2nd edition. Los Angeles: Sage, 2016.

MLA (9th ed.) Zitazioa

Walliman, Nicholas. Social Research Methods: The Essentials. 2nd edition. Sage, 2016.