University of California, Los Angeles. Center for the Study of Evaluation, Fund for the Advancement of Education (U.S.), Wittrock, M. C., & Wiley, D. E. (1970). The evaluation of instruction: Issues and problems. Holt, Rinehart and Winston.
Lua i Stíl Chicago (17ú heag.)University of California, Los Angeles. Center for the Study of Evaluation, Fund for the Advancement of Education (U.S.), M. C. Wittrock, agus David E. Wiley. The Evaluation of Instruction: Issues and Problems. New York: Holt, Rinehart and Winston, 1970.
Lua MLA (8ú heag.)University of California, Los Angeles. Center for the Study of Evaluation, et al. The Evaluation of Instruction: Issues and Problems. Holt, Rinehart and Winston, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.