lal, s. (1999). A textbook of practical zoology invertebrate (7th ed.). rastogi.
Citación estilo Chicagolal, s.s. A Textbook of Practical Zoology Invertebrate. 7th ed. meerut: rastogi, 1999.
Cita MLAlal, s.s. A Textbook of Practical Zoology Invertebrate. 7th ed. rastogi, 1999.
Warning: These citations may not always be 100% accurate.