APA (7th ed.) Zitazioa

lal, s. (1999). A textbook of practical zoology invertebrate (7th ed.). rastogi.

Chicago Style (17th ed.) Zitazioa

lal, s.s. A Textbook of Practical Zoology Invertebrate. 7th ed. meerut: rastogi, 1999.

MLA (9th ed.) Zitazioa

lal, s.s. A Textbook of Practical Zoology Invertebrate. 7th ed. rastogi, 1999.