Dyfyniad APA

Keith, A. (1934). The construction of man's family tree. Watts.

Dyfyniad Arddull Chicago

Keith, Arthur. The Construction of Man's Family Tree. Lond.: Watts, 1934.

Dyfyniad MLA

Keith, Arthur. The Construction of Man's Family Tree. Watts, 1934.

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