APA (7th ed.) Zitazioa
Alexander, M. (1977). The Earliest English Poems (3rd ed.). Penguin group.
Chicago Style (17th ed.) Zitazioa
Alexander, Michael. The Earliest English Poems. 3rd ed. London: Penguin group, 1977.
MLA (9th ed.) Zitazioa
Alexander, Michael. The Earliest English Poems. 3rd ed. Penguin group, 1977.
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