Sage, A. P., & White, C. C. (1977). Optimum systems control (2nd ed.). Prentice-Hall.
Cita Chicago Style (17a ed.)Sage, Andrew P., y Chelsea C. White. Optimum Systems Control. 2nd ed. Englewood Cliffs, New Jersey: Prentice-Hall, 1977.
Cita MLA (9a ed.)Sage, Andrew P., y Chelsea C. White. Optimum Systems Control. 2nd ed. Prentice-Hall, 1977.
Precaución: Estas citas no son 100% exactas.