APA استشهاد

Thomas, R. M. (1990). Encyclopedia of Human Development and Education: Theory Research and Studies. Pergamon Press.

استشهاد بنمط شيكاغو

Thomas, R Murray. Encyclopedia of Human Development and Education: Theory Research and Studies. Oxford: Pergamon Press, 1990.

MLA استشهاد

Thomas, R Murray. Encyclopedia of Human Development and Education: Theory Research and Studies. Pergamon Press, 1990.