APA
Khurana A. K., . (2018). Theory and practice of optics and refraction 4th ed. Elsevier: New Delhi.
Chicago
Khurana A K, . 2018. Theory and practice of optics and refraction 4th ed. Elsevier: New Delhi.
Harvard
Khurana A. K., . (2018). Theory and practice of optics and refraction 4th ed. Elsevier: New Delhi.
MLA
Khurana A K, . Theory and practice of optics and refraction 4th ed. Elsevier: New Delhi. 2018.