Citazione APA

Silver, G. A., & Silver, J. B. (1976). Introduction to systems analysis. Prentice-Hall.

Stile di citazione Chicago

Silver, Gerald A., e Joan B. Silver. Introduction to Systems Analysis. Englewood cliffs: Prentice-Hall, 1976.

Citazione MLA

Silver, Gerald A., e Joan B. Silver. Introduction to Systems Analysis. Prentice-Hall, 1976.