APA Style

Husin, S. et al (2012). Transvaginal Ultrasound Assessment of Cervical Length in Threatened Preterm Labor . Jakarta: Indonesian Society of Obstetrics and Gynecology.

MLA Style

Husin, Syarif. et al. "Transvaginal Ultrasound Assessment of Cervical Length in Threatened Preterm Labor". Jakarta: Indonesian Society of Obstetrics and Gynecology, 2012. Text.