APA

Chand S., . (19). Chand illustrated dictionary of science. New Delhi: S. Chand & Company Ltd.

Chicago

Chand S, . 19. Chand illustrated dictionary of science. New Delhi: S. Chand & Company Ltd.

Harvard

Chand S., . (19). Chand illustrated dictionary of science. New Delhi: S. Chand & Company Ltd.

MLA

Chand S, . Chand illustrated dictionary of science. New Delhi: S. Chand & Company Ltd. 19.