Dyfyniad APA

Simpson, G. G. (1953). The major features of evolution. Columbia University Press.

Dyfyniad Arddull Chicago

Simpson, George Gaylord. The Major Features of Evolution. New York: Columbia University Press, 1953.

Dyfyniad MLA

Simpson, George Gaylord. The Major Features of Evolution. Columbia University Press, 1953.

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