Παραπομπή APA

Wang, H. K., & Heady, E. O. (1980). Econometric analysis of U.S. farm labor markets. Ames: Center for Agricultural and Rural Development. Iowa State University.

Παραπομπή Chicago Style

Wang, H. K., and Earl O. Heady. Econometric Analysis of U.S. Farm Labor Markets. Ames: Center for Agricultural and Rural Development. Iowa State University, 1980.

Παραπομπή MLA

Wang, H. K., and Earl O. Heady. Econometric Analysis of U.S. Farm Labor Markets. Ames: Center for Agricultural and Rural Development. Iowa State University, 1980.

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