APA
(1965). Rubber Krishikku Sthalam Thiranjedukkalam Nilamorukkalum. Kottayam: Rubber Research Institute of India.
Chicago
1965. Rubber Krishikku Sthalam Thiranjedukkalam Nilamorukkalum. Kottayam: Rubber Research Institute of India.
Harvard
(1965). Rubber Krishikku Sthalam Thiranjedukkalam Nilamorukkalum. Kottayam: Rubber Research Institute of India.
MLA
Rubber Krishikku Sthalam Thiranjedukkalam Nilamorukkalum. Kottayam: Rubber Research Institute of India. 1965.