M.R.B. (1968). Valapottukal. Mangalodayam.
Chicago Style aipamenaM.R.B. Valapottukal. Mangalodayam: Mangalodayam, 1968.
MLA aipamenaM.R.B. Valapottukal. Mangalodayam, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
M.R.B. (1968). Valapottukal. Mangalodayam.
Chicago Style aipamenaM.R.B. Valapottukal. Mangalodayam: Mangalodayam, 1968.
MLA aipamenaM.R.B. Valapottukal. Mangalodayam, 1968.