Frio, A., & Price, E. (1979). Changes in cropping systems: Cale, Tanauan, Batangas, 1973-1977. Agricultural Economics Department, International Rice Research Institute.
Chicago Style (17th ed.) CitationFrio, A.L, and E.C Price. Changes in Cropping Systems: Cale, Tanauan, Batangas, 1973-1977. Los Baños, Laguna: Agricultural Economics Department, International Rice Research Institute, 1979.
MLA (9th ed.) CitationFrio, A.L, and E.C Price. Changes in Cropping Systems: Cale, Tanauan, Batangas, 1973-1977. Agricultural Economics Department, International Rice Research Institute, 1979.
Warning: These citations may not always be 100% accurate.