Cunningham, f. g. (2005). williams obstetrics 22 nd edition. McGraw-Hill Book Company.
Chicago-čujuhus (17. p.)Cunningham, f. gary. Williams Obstetrics 22 Nd Edition. McGraw-Hill Book Company, 2005.
MLA-čujuhus (9. p.)Cunningham, f. gary. Williams Obstetrics 22 Nd Edition. McGraw-Hill Book Company, 2005.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.