Παραπομπή APA

Freier .G.D. (1988). Demonstration handbook for Physics. American Association of Physics Techers.

Παραπομπή Chicago Style

Freier .G.D. Demonstration Handbook for Physics. College Park: American Association of Physics Techers, 1988.

Παραπομπή MLA

Freier .G.D. Demonstration Handbook for Physics. American Association of Physics Techers, 1988.