APA (7th ed.) Zitazioa

Grierson, H. (1960). A critical history of english poetry. Penguin Books.

Chicago Style (17th ed.) Zitazioa

Grierson, Herbert. A Critical History of English Poetry. Harmondsworth: Penguin Books, 1960.

MLA (9th ed.) Zitazioa

Grierson, Herbert. A Critical History of English Poetry. Penguin Books, 1960.