Cita APA (7a ed.)

Voelker, R., Balboa, O., & Lerena, A. (1980). Parenteral Nutrition in Esophageal Cancer.

Cita Chicago Style (17a ed.)

Voelker, Ricardo, Oscar Balboa, y Ana Lerena. Parenteral Nutrition in Esophageal Cancer. 1980.

Cita MLA (9a ed.)

Voelker, Ricardo, et al. Parenteral Nutrition in Esophageal Cancer. 1980.