APA
Internationa Rice Research Institute, Internationa Rice Research Institute, . (1977). Constraints to high yields on asian rice farms. Philippines: IRRI.
Chicago
Internationa Rice Research Institute, Internationa Rice Research Institute, . 1977. Constraints to high yields on asian rice farms. Philippines: IRRI.
Harvard
Internationa Rice Research Institute, Internationa Rice Research Institute, . (1977). Constraints to high yields on asian rice farms. Philippines: IRRI.
MLA
Internationa Rice Research Institute, Internationa Rice Research Institute, . Constraints to high yields on asian rice farms. Philippines: IRRI. 1977.
