APA

Retnamma K., . (1994). Malayala bhasha charithram ezhuthachan vare (m). : Current Books, Kottayam.

Chicago

Retnamma K, . 1994. Malayala bhasha charithram ezhuthachan vare (m). : Current Books, Kottayam.

Harvard

Retnamma K., . (1994). Malayala bhasha charithram ezhuthachan vare (m). : Current Books, Kottayam.

MLA

Retnamma K, . Malayala bhasha charithram ezhuthachan vare (m). : Current Books, Kottayam. 1994.