APA

Symposium on Cropping Systems, . (1977). Symposium on Cropping Systems Reserch and Development for the Asian Rice Farmer. Los Baños, Laguna: International Rice Research Institute.

Chicago

Symposium on Cropping Systems, . 1977. Symposium on Cropping Systems Reserch and Development for the Asian Rice Farmer. Los Baños, Laguna: International Rice Research Institute.

Harvard

Symposium on Cropping Systems, . (1977). Symposium on Cropping Systems Reserch and Development for the Asian Rice Farmer. Los Baños, Laguna: International Rice Research Institute.

MLA

Symposium on Cropping Systems, . Symposium on Cropping Systems Reserch and Development for the Asian Rice Farmer. Los Baños, Laguna: International Rice Research Institute. 1977.