CUNNINGHAM, F. (2014). Williams Obstetri. McGraw-Hill Book Company.
Cita Chicago (17th ed.)CUNNINGHAM, F.Gary. Williams Obstetri. McGraw-Hill Book Company, 2014.
Cita MLA (9th ed.)CUNNINGHAM, F.Gary. Williams Obstetri. McGraw-Hill Book Company, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.