Varma C R R. (1998). Prakrithijeevanam: Life natural (4.). State institute of languages.
Dyfyniad Arddull ChicagoVarma C R R. Prakrithijeevanam: Life Natural. 4. Thiruvananthapuram: State institute of languages, 1998.
Dyfyniad MLAVarma C R R. Prakrithijeevanam: Life Natural. 4. State institute of languages, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.