ebrary, Inc, Amoretti, M. C., & Preyer, G. (2011). Triangulation: From an epistemological point of view. Ontos Verlag.
Čikaški stil citiranja (17. izdanje)ebrary, Inc, Maria Cristina Amoretti, i Gerhard Preyer. Triangulation: From an Epistemological Point of View. Frankfurt: Ontos Verlag, 2011.
MLA način citiranja (9. izdanje)ebrary, Inc, et al. Triangulation: From an Epistemological Point of View. Ontos Verlag, 2011.
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