Knight, G. R. (1998). Issues and alternatives in educational philosophy (3rd ed.). Andrews University press.
Lua i Stíl Chicago (17ú heag.)Knight, George R. Issues and Alternatives in Educational Philosophy. 3rd ed. Berrien Spring: Andrews University press, 1998.
Lua MLA (9ú heag.)Knight, George R. Issues and Alternatives in Educational Philosophy. 3rd ed. Andrews University press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.