APA-viite

John, S. K. (2006). Nutritional disorders in tropical tuber crops. CTCRI.

Chicago-tyylinen lähdeviittaus

John, Susan K. Nutritional Disorders in Tropical Tuber Crops. Thiruvanathapuram: CTCRI, 2006.

MLA-viite

John, Susan K. Nutritional Disorders in Tropical Tuber Crops. CTCRI, 2006.