APA-viite

Heath, M. E., Hughes, H., & Metcalfe, D. S. (1952). Forages: The science of grassland agriculture. Iowa state college press.

Chicago-tyylinen lähdeviittaus

Heath, Maurice E., H.D Hughes, ja Darrel S. Metcalfe. Forages: The Science of Grassland Agriculture. Ames, Iowa: Iowa state college press, 1952.

MLA-viite

Heath, Maurice E., et al. Forages: The Science of Grassland Agriculture. Iowa state college press, 1952.