APA (7th ed.) Citation

Perez Sanchez, A., & Donoso Siña, E. (1992). Obstetricia (2 ed.). Mediterraneo.

Chicago Style (17th ed.) Citation

Perez Sanchez, A., and E. Donoso Siña. Obstetricia. 2 ed. Santiago: Mediterraneo, 1992.

MLA (9th ed.) Citation

Perez Sanchez, A., and E. Donoso Siña. Obstetricia. 2 ed. Mediterraneo, 1992.