APA (7th ed.) Citation

Gay, P. (1967). An introduction to crystal optics. Longmans.

Chicago Style (17th ed.) Citation

Gay, Peter. An Introduction to Crystal Optics. London: Longmans, 1967.

MLA (9th ed.) Citation

Gay, Peter. An Introduction to Crystal Optics. Longmans, 1967.

Warning: These citations may not always be 100% accurate.