APA (7th ed.) Citation

Makowski, E. L., & Colchero Arrubarena, F. Riesgo alto en obstetricia.

Chicago Style (17th ed.) Citation

Makowski, Edgar L., and Fernando Colchero Arrubarena. Riesgo Alto En Obstetricia.

MLA (8th ed.) Citation

Makowski, Edgar L., and Fernando Colchero Arrubarena. Riesgo Alto En Obstetricia.

Warning: These citations may not always be 100% accurate.