APA(7版)引用形式

WILLIAMS OBSTETRICS & COX, S. M. [. (2002). Williams obstetrics: Study guide.-- ed.21. McGraw-Hill.

Chicagoスタイル(17版)引用形式

WILLIAMS OBSTETRICS , Susan M. [et.al] COX. Williams Obstetrics: Study Guide.-- Ed.21. New York: McGraw-Hill, 2002.

MLA(9版)引用形式

WILLIAMS OBSTETRICS , Susan M. [et.al] COX. Williams Obstetrics: Study Guide.-- Ed.21. McGraw-Hill, 2002.