lal, s. (1999). A textbook of practical zoology invertebrate (7th ed.). rastogi.
Chicago-čujuhus (17. p.)lal, s.s. A Textbook of Practical Zoology Invertebrate. 7th ed. meerut: rastogi, 1999.
MLA-čujuhus (9. p.)lal, s.s. A Textbook of Practical Zoology Invertebrate. 7th ed. rastogi, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.