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