APA

Cunningham F. G., Leveno K. J., Bloom S. L., Hauth J. C., Rouse D. J., Spong C. y., Pérez Tamayo Ruíz A. M. & García Roig F. (2007). Obstetricia de Williams Gary Cunningham. México: Mcgraw-Hill Companies.

Chicago

Cunningham F Gary, Leveno Kenneth J, Bloom Steven L, Hauth John C, Rouse Dwight J, Spong Catherine y, Pérez Tamayo Ruíz Ana María and García Roig Félix. 2007. Obstetricia de Williams Gary Cunningham. México: Mcgraw-Hill Companies.

Harvard

Cunningham F. G., Leveno K. J., Bloom S. L., Hauth J. C., Rouse D. J., Spong C. y., Pérez Tamayo Ruíz A. M. and García Roig F. (2007). Obstetricia de Williams Gary Cunningham. México: Mcgraw-Hill Companies.

MLA

Cunningham F Gary, Leveno Kenneth J, Bloom Steven L, Hauth John C, Rouse Dwight J, Spong Catherine y, Pérez Tamayo Ruíz Ana María and García Roig Félix. Obstetricia de Williams Gary Cunningham. México: Mcgraw-Hill Companies. 2007.