Dyfyniad APA

Utgard, R. O. (1974). Man's finite earth. Burgess Publishing.

Dyfyniad Arddull Chicago

Utgard, Russell O. Man's Finite Earth. Minneapolis: Burgess Publishing, 1974.

Dyfyniad MLA

Utgard, Russell O. Man's Finite Earth. Burgess Publishing, 1974.

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