APA (7th ed.) Citation

Kellerer, H., Pferschy, U., & Pisinger, D. (2010). Knapsack problems. Springer.

Chicago Style (17th ed.) Citation

Kellerer, Hans, Ulrich Pferschy, and D. Pisinger. Knapsack Problems. Berlin ; New York: Springer, 2010.

MLA (8th ed.) Citation

Kellerer, Hans, et al. Knapsack Problems. Springer, 2010.