APA (7th ed.) Citation

Kellerer, H., Pferschy, U., & Pisinger, D. (2004). Knapsack Problems. Springer Berlin Heidelberg.

Chicago Style (17th ed.) Citation

Kellerer, Hans, Ulrich Pferschy, and D. Pisinger. Knapsack Problems. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004.

MLA (9th ed.) Citation

Kellerer, Hans, et al. Knapsack Problems. Springer Berlin Heidelberg, 2004.