Παραπομπή APA

Subrahmanyan, N. (2002). A text book of optics (22nd ed.). S. Chand & Co..

Παραπομπή Chicago Style

Subrahmanyan, N. A Text Book of Optics. 22nd ed. New Delhi: S. Chand & Co., 2002.

Παραπομπή MLA

Subrahmanyan, N. A Text Book of Optics. 22nd ed. S. Chand & Co., 2002.