APA استشهاد

Strayer, J. R., & Gatzke, H. W. (1974). Mainstream of Civilization to 1715 (2nd ed.). Harcourt Brace Jovanovich.

استشهاد بنمط شيكاغو

Strayer, Joseph R., و Hans W. Gatzke. Mainstream of Civilization to 1715. 2nd ed. New York: Harcourt Brace Jovanovich, 1974.

MLA استشهاد

Strayer, Joseph R., و Hans W. Gatzke. Mainstream of Civilization to 1715. 2nd ed. Harcourt Brace Jovanovich, 1974.