Montenbruck, O., Pfleger, T., Dunlop, S., West, R. M., & Pfleger, T. 1. (2000). Astronomy on the personal computer (4th ed., completely revised edition.). Berlin: Springer.

Montenbruck, Oliver, Thomas Pfleger, Storm Dunlop, Richard M. West, and T. 1964- Pfleger. Astronomy On the Personal Computer. 4th ed., completely revised edition. Berlin: Springer, 2000.

Montenbruck, Oliver, et al. Astronomy On the Personal Computer. 4th ed., completely revised edition. Berlin: Springer, 2000.