Lemus Riveros, C. F., & González Santos, W. (2020). Analysis of the Sustainability of Coffee Producing Farms in the Province of Guanentá, Santander. Universidad Pedagógica y Tecnológica de Colombia.
Lua i Stíl Chicago (17ú heag.)Lemus Riveros, Carlos Felipe, agus Wilson González Santos. Analysis of the Sustainability of Coffee Producing Farms in the Province of Guanentá, Santander. Universidad Pedagógica y Tecnológica de Colombia, 2020.
Lua MLA (9ú heag.)Lemus Riveros, Carlos Felipe, agus Wilson González Santos. Analysis of the Sustainability of Coffee Producing Farms in the Province of Guanentá, Santander. Universidad Pedagógica y Tecnológica de Colombia, 2020.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.