Librero, A. R., Perez, M. L., & Emlano, N. E. (1987). Estimating returns to research investment in sugarcane in the Philippines. Socio-Economic Research Department, Philippine Council for Agriculture, Forestry and Natural Resources Research and Development.

Librero, Aida Recto, Maripaz L. Perez, and Nineveth E. Emlano. Estimating Returns to Research Investment in Sugarcane in the Philippines. Los Banos, Laguna: Socio-Economic Research Department, Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, 1987.

Librero, Aida Recto, et al. Estimating Returns to Research Investment in Sugarcane in the Philippines. Socio-Economic Research Department, Philippine Council for Agriculture, Forestry and Natural Resources Research and Development, 1987.