Dyfyniad APA
Subrahmanyam, N., Lal, B., & Avadhanulu, M. (1966). A textbook of optics (25th rev,ed.). S.Chand & Company.
Dyfyniad Arddull Chicago
Subrahmanyam, N., Brij Lal, and M.N Avadhanulu. A Textbook of Optics. 25th rev,ed. New Delhi: S.Chand & Company, 1966.
Dyfyniad MLA
Subrahmanyam, N., et al. A Textbook of Optics. 25th rev,ed. S.Chand & Company, 1966.
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