Gaya APA

Suwardewa, T, G., Damanik, A. (2012). The Association between Periodontal Disease on Pregnancy and the Incidence of Preterm Labor . : Indonesian Society of Obstetrics and Gynecology.

Gaya MLA

Suwardewa, Tjokorda, GA., Damanik, Andoharman. "The Association between Periodontal Disease on Pregnancy and the Incidence of Preterm Labor". : Indonesian Society of Obstetrics and Gynecology, 2012. Text.