Παραπομπή σε μορφή APA (7η εκδ.)

Ritt, N. (1994). Quantity adjustment: Vowel langthening and shortening in early middle eniglish. Cambridge University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ritt, Nikolaus. Quantity Adjustment: Vowel Langthening and Shortening in Early Middle Eniglish. Cambridge: Cambridge University Press, 1994.

Παραπομπή σε μορφή MLA (8th εκδ.)

Ritt, Nikolaus. Quantity Adjustment: Vowel Langthening and Shortening in Early Middle Eniglish. Cambridge University Press, 1994.