APA-referens

Gopalakrishnan tr & Alexander d. (2013). Crop varities of kau. Directorate of research.

Chicago-stil citat

Gopalakrishnan tr och Alexander d. Crop Varities of Kau. Vellanikkara: Directorate of research, 2013.

MLA-referens

Gopalakrishnan tr och Alexander d. Crop Varities of Kau. Directorate of research, 2013.