Clark, N. (1979). Demystifying evaluation. World Education.
Lua i Stíl Chicago (17ú heag.)Clark, N. Demystifying Evaluation. New York: World Education, 1979.
Lua MLA (8ú heag.)Clark, N. Demystifying Evaluation. World Education, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.