Martinez, Juniora Blessie Ann N. “Profitability of Robusta Coffee (Coffea Canephora L.) at Farm Level in Quirino, Philippines”. International Journal of Multidisciplinary: Applied Business and Education Research 4, no. 7 (July 24, 2023): 2558–2565. Accessed January 24, 2026. https://ijmaberjournal.org/index.php/ijmaber/article/view/1036.