Cita APA (7a ed.)

Baum, E. L., Heady, E. O., Pesek, J. T., & Hildreth, C. G. (1957). Economic and technical analysis of fertilizer innovations and resource use. Iowa State College Press.

Cita Chicago Style (17a ed.)

Baum, E. L., Earl O. Heady, John T. Pesek, y Clifford G. Hildreth. Economic and Technical Analysis of Fertilizer Innovations and Resource Use. Ames: Iowa State College Press, 1957.

Cita MLA (8a ed.)

Baum, E. L., et al. Economic and Technical Analysis of Fertilizer Innovations and Resource Use. Iowa State College Press, 1957.