Παραπομπή APA

Clayton, S. G. (1970). Obstetrics (12th ed.). ELBS Edward Arnold.

Παραπομπή Chicago Style

Clayton, Stanley G. Obstetrics. 12th ed. London: ELBS Edward Arnold, 1970.

Παραπομπή MLA

Clayton, Stanley G. Obstetrics. 12th ed. ELBS Edward Arnold, 1970.