Wickremasinghe, D. Z. (2005). Malayalam: Self-taught by the natural method with phonetic pronunciation (Thimm's system) (2nd ed.). Asian Educational Services.
Trích dẫn kiểu ChicagoWickremasinghe, De Zilva. Malayalam: Self-taught by the Natural Method with Phonetic Pronunciation (Thimm's System). 2nd ed. New Delhi: Asian Educational Services, 2005.
Trích dẫn MLAWickremasinghe, De Zilva. Malayalam: Self-taught by the Natural Method with Phonetic Pronunciation (Thimm's System). 2nd ed. Asian Educational Services, 2005.
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