Ocampo Lopez, O. L., & Alvarez-Herrera, L. M. (2017). Trend in Coffee Production and Consumption in Colombia. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Ocampo Lopez, Olga Lucía, i Lina Maria Alvarez-Herrera. Trend in Coffee Production and Consumption in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2017.
MLA način citiranja (9. izdanje)Ocampo Lopez, Olga Lucía, i Lina Maria Alvarez-Herrera. Trend in Coffee Production and Consumption in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2017.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.
