Παραπομπή APA

Heady, E. O., & Srivastava, U. K. (1975). Spatial sector programming models in agriculture. Ames: Iowa State University Press.

Παραπομπή Chicago Style

Heady, Earl Orel, and Uma K. Srivastava. Spatial Sector Programming Models in Agriculture. Ames: Iowa State University Press, 1975.

Παραπομπή MLA

Heady, Earl Orel, and Uma K. Srivastava. Spatial Sector Programming Models in Agriculture. Ames: Iowa State University Press, 1975.

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