APA (7th ed.) Citation

Rothery, B., Byrne, B., & Mullally, A. (1976). The art of systems analysis (2nd ed.). Business Books.

Chicago Style (17th ed.) Citation

Rothery, Brian, Brendan Byrne, and Alan Mullally. The Art of Systems Analysis. 2nd ed. London: Business Books, 1976.

MLA (9th ed.) Citation

Rothery, Brian, et al. The Art of Systems Analysis. 2nd ed. Business Books, 1976.