Cita APA (7a ed.)

Fletcher, R. (1989). Practical methods of optimization (2nd ed.). John Wiley & Sons.

Cita Chicago Style (17a ed.)

Fletcher, Roger. Practical Methods of Optimization. 2nd ed. Chichester [etc.]: John Wiley & Sons, 1989.

Cita MLA (9a ed.)

Fletcher, Roger. Practical Methods of Optimization. 2nd ed. John Wiley & Sons, 1989.