APA

Parappurathu, . (1961). Aadyakiranangal (m). : Parappurathu.

Chicago

Parappurathu, . 1961. Aadyakiranangal (m). : Parappurathu.

Harvard

Parappurathu, . (1961). Aadyakiranangal (m). : Parappurathu.

MLA

Parappurathu, . Aadyakiranangal (m). : Parappurathu. 1961.