APA
Cunningham F. G., Leveno K. J., Dashe J. S., Hoffman B. L., Spong C. Y. & Casey. (2022). Williams obstetricia. México: McGraw-Hill Interamericana.
Chicago
Cunningham F Gary, Leveno Kenneth J, Dashe Jodi S, Hoffman Barbara L, Spong Catherine Y and Casey. 2022. Williams obstetricia. México: McGraw-Hill Interamericana.
Harvard
Cunningham F. G., Leveno K. J., Dashe J. S., Hoffman B. L., Spong C. Y. and Casey. (2022). Williams obstetricia. México: McGraw-Hill Interamericana.
MLA
Cunningham F Gary, Leveno Kenneth J, Dashe Jodi S, Hoffman Barbara L, Spong Catherine Y and Casey. Williams obstetricia. México: McGraw-Hill Interamericana. 2022.