Gaya APA

Helen, V. (2005). Mayes' Midwifery: A Text Book For Midwives (edisi 13). London: Bailiere Tindall.

Gaya MLA

Helen, Varney. "Mayes' Midwifery: A Text Book For Midwives". edisi 13 London: Bailiere Tindall, 2005. Text.