Παραπομπή APA

Tonne, H. A., & Nanassy, L. C. (1970). Principles of business education.

Παραπομπή Chicago Style

Tonne, Herbert A., και Louis C. Nanassy. Principles of Business Education. 1970.

Παραπομπή MLA

Tonne, Herbert A., και Louis C. Nanassy. Principles of Business Education. 1970.