APA
Rubber thottangalile theneecha valarthal. Kottayam: Rubber Research Institute of India.
Chicago
Rubber thottangalile theneecha valarthal. Kottayam: Rubber Research Institute of India.
Harvard
Rubber thottangalile theneecha valarthal. Kottayam: Rubber Research Institute of India.
MLA
Kottayam: Rubber Research Institute of India. .