Walliman, N. (2005). Your research project: A step by step guide for the first time researcher (2 Edition.).
Chicago Style aipamenaWalliman, Nicholas. Your Research Project: A Step by Step Guide for the First Time Researcher. 2 Edition. Vistaar Publications, New Delhi, 2005.
MLA aipamenaWalliman, Nicholas. Your Research Project: A Step by Step Guide for the First Time Researcher. 2 Edition. 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.