Lua APA (7ú heag.)
Alkin, M. C. (2013). Evaluation roots: A wider perspective of theorists' views and influences (2nd ed.). SAGE Publications.
Lua i Stíl Chicago (17ú heag.)
Alkin, Marvin C. Evaluation Roots: A Wider Perspective of Theorists' Views and Influences. 2nd ed. Los Angeles: SAGE Publications, 2013.
Lua MLA (9ú heag.)
Alkin, Marvin C. Evaluation Roots: A Wider Perspective of Theorists' Views and Influences. 2nd ed. SAGE Publications, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.