APA (7th ed.) Zitazioa

ProQuest (Firm). (1996). The path to the Ph.D: Measuring graduate attrition in the sciences and humanities. National Academy Press.

Chicago Style (17th ed.) Zitazioa

ProQuest (Firm). The Path to the Ph.D: Measuring Graduate Attrition in the Sciences and Humanities. Washington, D.C.: National Academy Press, 1996.

MLA (9th ed.) Zitazioa

ProQuest (Firm). The Path to the Ph.D: Measuring Graduate Attrition in the Sciences and Humanities. National Academy Press, 1996.

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