Gaya APA

YENTIS, S. et al (2007). Analgesia, Anaesthesia and Pregnancy : A Practical Guide (2). New York: Cambridge University Press.

Gaya MLA

YENTIS, STEVE. et al. "Analgesia, Anaesthesia and Pregnancy : A Practical Guide". 2 New York: Cambridge University Press, 2007. Digital Book.