Gaya APA

Varney, H. (1997). Varney's midwifery th. 1997 ( MKKB ) (1 - 1997). Boston: .

Gaya MLA

Varney, Helen. "Varney's midwifery th. 1997 ( MKKB )". 1 - 1997 Boston: , 1997. Text.