APA

Iyer B. G. B. S. A., . (1984). Commercial arithmetic. : Sultan Chand & Sons, New Delhi.

Chicago

Iyer B G Bari S A, . 1984. Commercial arithmetic. : Sultan Chand & Sons, New Delhi.

Harvard

Iyer B. G. B. S. A., . (1984). Commercial arithmetic. : Sultan Chand & Sons, New Delhi.

MLA

Iyer B G Bari S A, . Commercial arithmetic. : Sultan Chand & Sons, New Delhi. 1984.