Cita APA (7th ed.)

Krabs, W. (1979). Optimization and approximation. Wiley.

Cita Chicago (17th ed.)

Krabs, Werner. Optimization and Approximation. Chichester, [Eng.] ; New York: Wiley, 1979.

Cita MLA (8th ed.)

Krabs, Werner. Optimization and Approximation. Wiley, 1979.