Cita APA (7th ed.)

Optner, S. L. (1968). Systems analysis: For business management (2a. ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Optner, Stanford L. Systems Analysis: For Business Management. 2a. ed. Englewood Cliffs: Prentice-Hall, 1968.

Cita MLA (9th ed.)

Optner, Stanford L. Systems Analysis: For Business Management. 2a. ed. Prentice-Hall, 1968.