Cita APA (7th ed.)

Leveno, K. J. (2003). Williams manual of obstetrics (21st ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Leveno, Kenneth J. Williams Manual of Obstetrics. 21st ed. Boston: McGraw-Hill, 2003.

Cita MLA (9th ed.)

Leveno, Kenneth J. Williams Manual of Obstetrics. 21st ed. McGraw-Hill, 2003.