Cita APA (7a ed.)
Hajjar, R., Jarvis, D. I., & Gemmill-Herren, B. (2008). The utility of crop genetic diversity in maintaining ecosystem services. Elsevier.
Cita Chicago Style (17a ed.)
Hajjar, R., Devra I. Jarvis, y Barbara Gemmill-Herren. The Utility of Crop Genetic Diversity in Maintaining Ecosystem Services. Elsevier, 2008.
Cita MLA (9a ed.)
Hajjar, R., et al. The Utility of Crop Genetic Diversity in Maintaining Ecosystem Services. Elsevier, 2008.
Precaución: Estas citas no son 100% exactas.