APA-viite (7. p.)
ebrary, Inc, Gutin, G., & Punnen, A. P. (2002). The traveling salesman problem and its variations. Kluwer Academic Publishers.
Chicago-viite (17. p.)
ebrary, Inc, Gregory Gutin, ja Abraham P. Punnen. The Traveling Salesman Problem and Its Variations. Dordrecht ; Boston: Kluwer Academic Publishers, 2002.
MLA-viite (9. p.)
ebrary, Inc, et al. The Traveling Salesman Problem and Its Variations. Kluwer Academic Publishers, 2002.
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