APA (7th ed.) Citation

Quick, M. J., Childs, S. B., Foster, J. N., Noe, P. S., & Williams, G. N. (1980). A language for designing software systems.

Chicago Style (17th ed.) Citation

Quick, Michael Joseph, S. Bart Childs, Joseph N. Foster, Philip S. Noe, and Glen N. Williams. A Language for Designing Software Systems. 1980.

MLA (9th ed.) Citation

Quick, Michael Joseph, et al. A Language for Designing Software Systems. 1980.