Gaya APA

Strayer, J, R., Gatzke, H, W. (1984). The Mainstream of Civilization (Fourth Edition) / Josep R. Strayer (Ed. 4). Florida: Harcourt Brace Jovanovich.

Gaya MLA

Strayer, Josep, R., Gatzke, Hans, W.. "The Mainstream of Civilization (Fourth Edition) / Josep R. Strayer". Ed. 4 Florida: Harcourt Brace Jovanovich, 1984. Text.