APA (7th ed.) Citation

McGettrick, A. D. (1978). An introduction to the formal definition of ALGOL 68. Pergamon Press.

Chicago Style (17th ed.) Citation

McGettrick, Andrew D. An Introduction to the Formal Definition of ALGOL 68. Oxford: Pergamon Press, 1978.

MLA (9th ed.) Citation

McGettrick, Andrew D. An Introduction to the Formal Definition of ALGOL 68. Pergamon Press, 1978.

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