APA (7th ed.) Citation

Willis, C., & Paddon, D. J. (1992). Abstraction and specification with modula-2. pitman.

Chicago Style (17th ed.) Citation

Willis, Claire, and D. J. Paddon. Abstraction and Specification with Modula-2. London: pitman, 1992.

MLA (9th ed.) Citation

Willis, Claire, and D. J. Paddon. Abstraction and Specification with Modula-2. pitman, 1992.

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