APA-viite (7. p.)

Freeman, J. F. (2008). High Plains horticulture: A history. University Press of Colorado.

Chicago-viite (17. p.)

Freeman, John F. High Plains Horticulture: A History. Boulder: University Press of Colorado, 2008.

MLA-viite (9. p.)

Freeman, John F. High Plains Horticulture: A History. University Press of Colorado, 2008.