Dyfyniad APA
Strayer, J. R., Harbison, H. E., & Gatzek, H. W. (1974). The mainstream of civilization (2nd ed.). Harcourt.
Dyfyniad Arddull Chicago
Strayer, Joseph R., Harris E. Harbison, and Hans W. Gatzek. The Mainstream of Civilization. 2nd ed. New York: Harcourt, 1974.
Dyfyniad MLA
Strayer, Joseph R., et al. The Mainstream of Civilization. 2nd ed. Harcourt, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.