Gaya APA

Obstetrics & Gynaecology. (1999). USA: Blackwell.

Gaya Chicago

Obstetrics & Gynaecology. . USA: Blackwell, 1999. .

Gaya MLA

Obstetrics & Gynaecology. . USA: Blackwell, 1999. .

Gaya Turabian

Obstetrics & Gynaecology. USA: Blackwell, 1999. .