APA (7th ed.) Citation

Byrne, B., Mullally, A., & Rothery, B. (1969). The art of systems analysis. Business Books.

Chicago Style (17th ed.) Citation

Byrne, Brendan, Alan Mullally, and Brian Rothery. The Art of Systems Analysis. London: Business Books, 1969.

MLA (9th ed.) Citation

Byrne, Brendan, et al. The Art of Systems Analysis. Business Books, 1969.