Gaya APA

al.], K., J., L., .., Pendit, B., U. (2009). Obstetri Williams : panduan ringkas (21). Geneva: .

Gaya MLA

al.], K., J., L., .., Pendit, B., U.. Obstetri Williams : panduan ringkas. 21 Geneva: , 2009. Book of Midwifery.