APA
(1990). Proceedings of National Symposium on New Trends in Crop Improvement of Perennial Species, 30 August 1990, Kottayam, India. Kottayam: Rubber Research Institute of India.
Chicago
1990. Proceedings of National Symposium on New Trends in Crop Improvement of Perennial Species, 30 August 1990, Kottayam, India. Kottayam: Rubber Research Institute of India.
Harvard
(1990). Proceedings of National Symposium on New Trends in Crop Improvement of Perennial Species, 30 August 1990, Kottayam, India. Kottayam: Rubber Research Institute of India.
MLA
Proceedings of National Symposium on New Trends in Crop Improvement of Perennial Species, 30 August 1990, Kottayam, India. Kottayam: Rubber Research Institute of India. 1990.
