Gaya APA

LEVENO, K, J. (2013). WILLIAMS MANUAL OF PREGNANCY COMPLICATIONS (EDISI 23). NEW YORK: MCGRAW-HILL.

Gaya MLA

LEVENO, KENNETH, J. "WILLIAMS MANUAL OF PREGNANCY COMPLICATIONS". EDISI 23 NEW YORK: MCGRAW-HILL, 2013. PERAWAT.