Gopikkuttan Nayar K. (1974). Amerikkayute Sampattika charitram. State Institute of Languages.
Chicago Style aipamenaGopikkuttan Nayar K. Amerikkayute Sampattika Charitram. Trivandrum: State Institute of Languages, 1974.
MLA aipamenaGopikkuttan Nayar K. Amerikkayute Sampattika Charitram. State Institute of Languages, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.