Hessong, R. F. (1991). Introduction to the foundations of education (2nd ed.). Macmillan.
Lua i Stíl Chicago (17ú heag.)Hessong, Robert F. Introduction to the Foundations of Education. 2nd ed. New York: Macmillan, 1991.
Lua MLA (9ú heag.)Hessong, Robert F. Introduction to the Foundations of Education. 2nd ed. Macmillan, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.