APA
(1977). Seminar - 77 (Seminar on Rubber and Fertiliser), 30 December 1977, Kanyakumari, India. Kottayam: Rubber Research Institute of India.
Chicago
1977. Seminar - 77 (Seminar on Rubber and Fertiliser), 30 December 1977, Kanyakumari, India. Kottayam: Rubber Research Institute of India.
Harvard
(1977). Seminar - 77 (Seminar on Rubber and Fertiliser), 30 December 1977, Kanyakumari, India. Kottayam: Rubber Research Institute of India.
MLA
Seminar - 77 (Seminar on Rubber and Fertiliser), 30 December 1977, Kanyakumari, India. Kottayam: Rubber Research Institute of India. 1977.
