Dyfyniad APA

Agassiz, L. (1863). Methods of study in natural history. Ticknor and Fields.

Dyfyniad Arddull Chicago

Agassiz, Louis. Methods of Study in Natural History. Boston: Ticknor and Fields, 1863.

Dyfyniad MLA

Agassiz, Louis. Methods of Study in Natural History. Ticknor and Fields, 1863.

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