Cita APA (7th ed.)
Subrahmanyam, N., Lal, B., & Avadhanulu, M. (1966). A textbook of optics (23rd rev. enl. ed.). S. Chand.
Cita Chicago (17th ed.)
Subrahmanyam, N., Brij Lal, i M.N Avadhanulu. A Textbook of Optics. 23rd rev. enl. ed. New Delhi: S. Chand, 1966.
Cita MLA (9th ed.)
Subrahmanyam, N., et al. A Textbook of Optics. 23rd rev. enl. ed. S. Chand, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.