APA

Arora M. P., . (1992). Ecology. : Himalaya Publishing House, Bombay.

Chicago

Arora Mohan P, . 1992. Ecology. : Himalaya Publishing House, Bombay.

Harvard

Arora M. P., . (1992). Ecology. : Himalaya Publishing House, Bombay.

MLA

Arora Mohan P, . Ecology. : Himalaya Publishing House, Bombay. 1992.