APA (7th ed.) Citation

Data, E. S., Roa, J. R., & Tangonan, P. G. (1997). Sweetpotato food systems in Central Luzon, Philippines. UPWARD.

Chicago Style (17th ed.) Citation

Data, Emma S., Julieta R. Roa, and Priscila G. Tangonan. Sweetpotato Food Systems in Central Luzon, Philippines. Los Banos, Laguna: UPWARD, 1997.

MLA (9th ed.) Citation

Data, Emma S., et al. Sweetpotato Food Systems in Central Luzon, Philippines. UPWARD, 1997.