APA (7th ed.) Citation

Smith, G. F. H., & Phillips, F. C. (1972). Gemstones (14th edition.). Chapman and Hall.

Chicago Style (17th ed.) Citation

Smith, George Frederick Herbert, and F. C. Phillips. Gemstones. 14th edition. London: Chapman and Hall, 1972.

MLA (9th ed.) Citation

Smith, George Frederick Herbert, and F. C. Phillips. Gemstones. 14th edition. Chapman and Hall, 1972.

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