ebrary, Inc, Amoretti, M. C., & Preyer, G. (2011). Triangulation: From an epistemological point of view. Ontos Verlag.
Chicago Style (17th ed.) Zitazioaebrary, Inc, Maria Cristina Amoretti, eta Gerhard Preyer. Triangulation: From an Epistemological Point of View. Frankfurt: Ontos Verlag, 2011.
MLA (9th ed.) Zitazioaebrary, Inc, et al. Triangulation: From an Epistemological Point of View. Ontos Verlag, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.