APA (7th ed.) Citation

Gray, p. D., & Mohamed, R. (1990). Smalltalk-80: A practical introduction. Pitman.

Chicago Style (17th ed.) Citation

Gray, philip D., and Ramzan Mohamed. Smalltalk-80: A Practical Introduction. London: Pitman, 1990.

MLA (9th ed.) Citation

Gray, philip D., and Ramzan Mohamed. Smalltalk-80: A Practical Introduction. Pitman, 1990.

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