Cita APA (7a ed.)

Hellickson, M. A., & Walker, J. M. (1983). Ventilation of agricultural structures. American Society of Agricultural Engineers.

Cita Chicago Style (17a ed.)

Hellickson, Mylo A., y John M. Walker. Ventilation of Agricultural Structures. Michigan: American Society of Agricultural Engineers, 1983.

Cita MLA (8a ed.)

Hellickson, Mylo A., y John M. Walker. Ventilation of Agricultural Structures. American Society of Agricultural Engineers, 1983.