Gaya APA

Tracy, G, R., E., I, T, H, E, I, F, A. (1983). Modern physical science . New York: New York: Holt, Rinehart and Winston; 1983.

Gaya MLA

Tracy, George, R.., E., I., Tropp,, Harry, E., II., Friedl,, Alfred. "Modern physical science". New York: New York: Holt, Rinehart and Winston; 1983, 1983. Text.