APA (7th ed.) Citation

Thomas, D. M. (1982). Birthstone. A King Penguin.

Chicago Style (17th ed.) Citation

Thomas, D. M. Birthstone. Harmondsworth: A King Penguin, 1982.

MLA (8th ed.) Citation

Thomas, D. M. Birthstone. A King Penguin, 1982.

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