Cita APA (7a ed.)

Heady, E. O. (1961). Agricultural supply functions.. (1st edition.). Iowa State University Press.

Cita Chicago Style (17a ed.)

Heady, Earl O. Agricultural Supply Functions.. 1st edition. Ames: Iowa State University Press, 1961.

Cita MLA (8a ed.)

Heady, Earl O. Agricultural Supply Functions.. 1st edition. Iowa State University Press, 1961.