Citazione Stile APA (7a Edizione)

Walberg, H. J., & Haertel, G. D. (1990). The international encyclopedia of educational evaluation. Pergamon Press.

Citazione stile Chigago Style (17a edizione)

Walberg, Herbert J., e Geneva D. Haertel. The International Encyclopedia of Educational Evaluation. Oxford: Pergamon Press, 1990.

Citatione MLA (9a ed.)

Walberg, Herbert J., e Geneva D. Haertel. The International Encyclopedia of Educational Evaluation. Pergamon Press, 1990.