Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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