APA
Arora M. P., . (1992). Ecology. Bombay: Himalaya Publishing House.
Chicago
Arora Mohan P, . 1992. Ecology. Bombay: Himalaya Publishing House.
Harvard
Arora M. P., . (1992). Ecology. Bombay: Himalaya Publishing House.
MLA
Arora Mohan P, . Ecology. Bombay: Himalaya Publishing House. 1992.