APA استشهاد

Strayer, J. R. 1., Gatzke, H. W. 1., & Harbison, E. H. 1. (1961). The course of civilization. New York: Harcourt, Brace & World.

استشهاد بنمط شيكاغو

Strayer, Joseph R.‪ 1904-1987,, Hans W.‪ 1915-1987 Gatzke, و E. Harris 1907-1964 Harbison. The Course of Civilization. New York: Harcourt, Brace & World, 1961.

MLA استشهاد

Strayer, Joseph R.‪ 1904-1987,, Hans W.‪ 1915-1987 Gatzke, و E. Harris 1907-1964 Harbison. The Course of Civilization. New York: Harcourt, Brace & World, 1961.