APA

Purang V., . (1972). Phylum protozoa. : Rajhans Prakashan Mandir Publishers, Meerut.

Chicago

Purang V, . 1972. Phylum protozoa. : Rajhans Prakashan Mandir Publishers, Meerut.

Harvard

Purang V., . (1972). Phylum protozoa. : Rajhans Prakashan Mandir Publishers, Meerut.

MLA

Purang V, . Phylum protozoa. : Rajhans Prakashan Mandir Publishers, Meerut. 1972.