Dyfyniad APA
Langer, W. L., Eadie, J. W., Geanakoplos, D. J., Hexter, J. H., & Pipes, R. (1975). Western civilization (2d ed.). Harper & Row.
Dyfyniad Arddull Chicago
Langer, William L., John William Eadie, Deno J. Geanakoplos, J. H. Hexter, and Richard Pipes. Western Civilization. 2d ed. New York: Harper & Row, 1975.
Dyfyniad MLA
Langer, William L., et al. Western Civilization. 2d ed. Harper & Row, 1975.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.