Dyfyniad APA

STRAYER, J. R., GATZKE, H. W., & HARBISON, E. H. (1974). The mainstream of civilization since 1789. HBJ.

Dyfyniad Arddull Chicago

STRAYER, Joseph R., Hans W. GATZKE, and E. Harris HARBISON. The Mainstream of Civilization Since 1789. New York: HBJ, 1974.

Dyfyniad MLA

STRAYER, Joseph R., et al. The Mainstream of Civilization Since 1789. HBJ, 1974.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.