Παραπομπή APA

Hampel, C. A. (1968). encyclopedia of the chemical elements. Reinhold.

Παραπομπή Chicago Style

Hampel, Clifford A. Encyclopedia of the Chemical Elements. New York: Reinhold, 1968.

Παραπομπή MLA

Hampel, Clifford A. Encyclopedia of the Chemical Elements. Reinhold, 1968.