APA
(1978). Directory of Rubber Estates and Holdings in India. Kottayam: Rubber Research Institute of India.
Chicago
1978. Directory of Rubber Estates and Holdings in India. Kottayam: Rubber Research Institute of India.
Harvard
(1978). Directory of Rubber Estates and Holdings in India. Kottayam: Rubber Research Institute of India.
MLA
Directory of Rubber Estates and Holdings in India. Kottayam: Rubber Research Institute of India. 1978.
