KOTPAL,R.L. (1997). MOLLUSCA (8th ed.). Rastogi Publications.
Tohutoru Kātū Chicago (17th ed.)KOTPAL,R.L. MOLLUSCA. 8th ed. India: Rastogi Publications, 1997.
Tohutoro MLA (9th ed.)KOTPAL,R.L. MOLLUSCA. 8th ed. Rastogi Publications, 1997.
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