APA

Gupthan Nair S., . (1966). Ism ngalkappuram (m). : Sahithya Parishat Co-operative Society, Kottayam.

Chicago

Gupthan Nair S, . 1966. Ism ngalkappuram (m). : Sahithya Parishat Co-operative Society, Kottayam.

Harvard

Gupthan Nair S., . (1966). Ism ngalkappuram (m). : Sahithya Parishat Co-operative Society, Kottayam.

MLA

Gupthan Nair S, . Ism ngalkappuram (m). : Sahithya Parishat Co-operative Society, Kottayam. 1966.