APA

Mathur B. K., . (1970). Geometrical and physical optics. : Gopal Printing Press, Kanpur.

Chicago

Mathur B K, . 1970. Geometrical and physical optics. : Gopal Printing Press, Kanpur.

Harvard

Mathur B. K., . (1970). Geometrical and physical optics. : Gopal Printing Press, Kanpur.

MLA

Mathur B K, . Geometrical and physical optics. : Gopal Printing Press, Kanpur. 1970.