APA-viite

Howard, A., & Howard, G. (1929). Application of Science to Crop- Production: An experiment carried out at the Institute of Plant Industry, Indore. Oxford University Press.

Chicago-tyylinen lähdeviittaus

Howard, Albert, ja Gabrielle Howard. Application of Science to Crop- Production: An Experiment Carried Out at the Institute of Plant Industry, Indore. Humphrey: Oxford University Press, 1929.

MLA-viite

Howard, Albert, ja Gabrielle Howard. Application of Science to Crop- Production: An Experiment Carried Out at the Institute of Plant Industry, Indore. Oxford University Press, 1929.