APA (7th ed.) Citation

Read, P. G. (1991). Gemmology. Butterworth-Heinemann.

Chicago Style (17th ed.) Citation

Read, Peter G. Gemmology. Oxford [England] ; Boston: Butterworth-Heinemann, 1991.

MLA (9th ed.) Citation

Read, Peter G. Gemmology. Butterworth-Heinemann, 1991.