Freed, M. N., Hess, R. K., & Ryan, J. M. (1989). The educator's desk reference (EDR): A sourcebook of educational information and research. American Council on Education.
Citazione stile Chigago Style (17a edizione)Freed, Melvyn N., Robert K. Hess, e Joseph M. Ryan. The Educator's Desk Reference (EDR): A Sourcebook of Educational Information and Research. New York: American Council on Education, 1989.
Citatione MLA (9a ed.)Freed, Melvyn N., et al. The Educator's Desk Reference (EDR): A Sourcebook of Educational Information and Research. American Council on Education, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.