APA (7th ed.) Citation

Malt, R. A., & Colchero Arrubarena, F. Cirugía gastrointestinal.

Chicago Style (17th ed.) Citation

Malt, Ronald A., and Fernando Colchero Arrubarena. Cirugía Gastrointestinal.

MLA (8th ed.) Citation

Malt, Ronald A., and Fernando Colchero Arrubarena. Cirugía Gastrointestinal.

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