Gaya APA

Lumbantobing, S, M. et al (1999). Breastfeeding : A Guide for The Medical Profession (Fifth Edition). St.Louis Baltimore: The C.V. Mosby Company.

Gaya MLA

Lumbantobing, S, M. et al. "Breastfeeding : A Guide for The Medical Profession". Fifth Edition St.Louis Baltimore: The C.V. Mosby Company, 1999. Text.