Sierra Sánchez, N. F. (2023). Rural Extension: The Vital Linkage Between Research and Agricultural Production. Coffee Experiences. Universidad Pedagógica y Tecnológica de Colombia.
Lua i Stíl Chicago (17ú heag.)Sierra Sánchez, Néstor Fabián. Rural Extension: The Vital Linkage Between Research and Agricultural Production. Coffee Experiences. Universidad Pedagógica y Tecnológica de Colombia, 2023.
Lua MLA (9ú heag.)Sierra Sánchez, Néstor Fabián. Rural Extension: The Vital Linkage Between Research and Agricultural Production. Coffee Experiences. Universidad Pedagógica y Tecnológica de Colombia, 2023.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
