APA (7th ed.) Zitazioa
Alkin, M. C. (2013). Evaluation roots: A wider perspective of theorists' views and influences (2nd ed.). SAGE Publications.
Chicago Style (17th ed.) Zitazioa
Alkin, Marvin C. Evaluation Roots: A Wider Perspective of Theorists' Views and Influences. 2nd ed. Los Angeles: SAGE Publications, 2013.
MLA (9th ed.) Zitazioa
Alkin, Marvin C. Evaluation Roots: A Wider Perspective of Theorists' Views and Influences. 2nd ed. SAGE Publications, 2013.
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