Cita APA (7a ed.)
Hess, S. Y., Thurnham, D. I., & Hurrell, R. F. (2005). Influence of provitamin A carotenoids on iron, zinc, and vitamin A status. International Food Policy Research Institute.
Cita Chicago Style (17a ed.)
Hess, Sonja Y., David I. Thurnham, y Richard F. Hurrell. Influence of Provitamin A Carotenoids on Iron, Zinc, and Vitamin A Status. International Food Policy Research Institute, 2005.
Cita MLA (9a ed.)
Hess, Sonja Y., et al. Influence of Provitamin A Carotenoids on Iron, Zinc, and Vitamin A Status. International Food Policy Research Institute, 2005.
Precaución: Estas citas no son 100% exactas.