Gutin, G., Gutin, G., & Punnen, A. (2007). The traveling salesman problem and its variations. Springer US.
Style de citation Chicago (17e éd.)Gutin, Gregory, G. Gutin, et A.P Punnen. The Traveling Salesman Problem and Its Variations. New York, NY: Springer US, 2007.
Style de citation MLA (8e éd.)Gutin, Gregory, et al. The Traveling Salesman Problem and Its Variations. Springer US, 2007.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.