Dyfyniad APA

Cotter, A. C. (1947). Natural species: An essay in definition and classification. Weston College Press.

Dyfyniad Arddull Chicago

Cotter, A. C. Natural Species: An Essay in Definition and Classification. Weston, Mass.: Weston College Press, 1947.

Dyfyniad MLA

Cotter, A. C. Natural Species: An Essay in Definition and Classification. Weston College Press, 1947.

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