APA (7e ed.) Bronvermelding

Durano, F. L. A., Alviola, P. A., IV, Digal, L. N., Oponda, N. B., & Sarmiento, J. M. P. (2019). The effects of altitude on the profitability, productivity, and technical efficiency of cacao farms in Calinan and Marilog Districts, Davao City, Philippines. Banwa.

Chicago (17e ed.) Bronvermelding

Durano, Francis Levi A., Pedro A. Alviola, IV, Larry N. Digal, Nilo B. Oponda, en Jon Marx P. Sarmiento. "The Effects of Altitude on the Profitability, Productivity, and Technical Efficiency of Cacao Farms in Calinan and Marilog Districts, Davao City, Philippines." Banwa 2019.

MLA (9e ed.) Bronvermelding

Durano, Francis Levi A., et al. "The Effects of Altitude on the Profitability, Productivity, and Technical Efficiency of Cacao Farms in Calinan and Marilog Districts, Davao City, Philippines." Banwa, 2019.