Cita APA (7th ed.)

Fitzgerald, J., Fitzgerald, A. F., & Stallings, W. D. (1981). Fundamentals of systems analysis (2a. ed.). John Wiley.

Cita Chicago (17th ed.)

Fitzgerald, Jerry, Ardra F. Fitzgerald, i Warren D. Stallings. Fundamentals of Systems Analysis. 2a. ed. Nueva York: John Wiley, 1981.

Cita MLA (9th ed.)

Fitzgerald, Jerry, et al. Fundamentals of Systems Analysis. 2a. ed. John Wiley, 1981.