Helme, T. A. (1889). The Physiology of the Third Stage of Labour. Edinb Med J.
Chicago Style aipamenaHelme, T. Arthur. "The Physiology of the Third Stage of Labour." Edinb Med J 1889.
MLA aipamenaHelme, T. Arthur. "The Physiology of the Third Stage of Labour." Edinb Med J 1889.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.