Dyfyniad APA

Macgowan Christopher. Twentieth century american poetry. Blackwell.

Dyfyniad Arddull Chicago

Macgowan Christopher. Twentieth Century American Poetry. Oxford: Blackwell.

Dyfyniad MLA

Macgowan Christopher. Twentieth Century American Poetry. Blackwell.

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