APA

Cunningham F. G., Leveno K. J., Bloom S. L., Hauth J. C., Rouse D. J., Spong C. y., Pérez Tamayo Ruíz A. M., Araiza Martínez M. E., González Hernández J. L., Enríquez Cotera G. & García Roig F. (2011). Williams obstetricia / F.Gary Cunningham ...[ et al.]. 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, Araiza Martínez Martha Elena, González Hernández José Luis, Enríquez Cotera Gabriela and García Roig Félix. 2011. Williams obstetricia / F.Gary Cunningham ...[ et al.]. 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., Araiza Martínez M. E., González Hernández J. L., Enríquez Cotera G. and García Roig F. (2011). Williams obstetricia / F.Gary Cunningham ...[ et al.]. 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, Araiza Martínez Martha Elena, González Hernández José Luis, Enríquez Cotera Gabriela and García Roig Félix. Williams obstetricia / F.Gary Cunningham ...[ et al.]. México: Mcgraw-Hill Companies. 2011.