APA Style

Hibbard, Bryan M.. (1988). Principles of Obstetrics (-). London: Butterworths.

Chicago Style

Hibbard, Bryan M.. Principles of Obstetrics. - London: Butterworths, 1988. Text.

MLA Style

Hibbard, Bryan M.. Principles of Obstetrics. - London: Butterworths, 1988. Text.

Turabian Style

Hibbard, Bryan M.. Principles of Obstetrics. - London: Butterworths, 1988. Print.