Dyfyniad APA

Jean, F. C. (1949). Man and his physical universe (Rev. ed.). Ginn.

Dyfyniad Arddull Chicago

Jean, Frank Covert. Man and His Physical Universe. Rev. ed. Boston: Ginn, 1949.

Dyfyniad MLA

Jean, Frank Covert. Man and His Physical Universe. Rev. ed. Ginn, 1949.

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