Gaya APA

Baston, H., Hall, J. (2011). Midwifery essentials antenatal volume 2(midwifery essentials : antenatal) (Vol.2). Jakarta: EGC.

Gaya MLA

Baston, Helen., Hall, Jennifer. "Midwifery essentials antenatal volume 2(midwifery essentials : antenatal)". Vol.2 Jakarta: EGC, 2011. Text.