Olson, T. M. (1938). Elements of dairying. The Macmillan company.
Cita Chicago Style (17a ed.)Olson, Thomas Mandaneous. Elements of Dairying. New York: The Macmillan company, 1938.
Cita MLA (8a ed.)Olson, Thomas Mandaneous. Elements of Dairying. The Macmillan company, 1938.
Precaución: Estas citas no son 100% exactas.