Shell, R. L., & Stelzer, D. F. (1971). SYSTEMS ANALYSIS: AID TO DECISION MAKING. Business Horizons, 14(6), 67. https://doi.org/10.1016/0007-6813(71)90061-9
Chicago Style (17th ed.) CitationShell, Richard L., and David F. Stelzer. "SYSTEMS ANALYSIS: AID TO DECISION MAKING." Business Horizons 14, no. 6 (1971): 67. https://doi.org/10.1016/0007-6813(71)90061-9.
MLA (9th ed.) CitationShell, Richard L., and David F. Stelzer. "SYSTEMS ANALYSIS: AID TO DECISION MAKING." Business Horizons, vol. 14, no. 6, 1971, p. 67, https://doi.org/10.1016/0007-6813(71)90061-9.
Warning: These citations may not always be 100% accurate.