APA aipamena

Keep, A. V. (1981). The Premenstrual Syndrome. MTP Press Limited.

Chicago Style aipamena

Keep, A. Van. The Premenstrual Syndrome. Berlin: MTP Press Limited, 1981.

MLA aipamena

Keep, A. Van. The Premenstrual Syndrome. MTP Press Limited, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.