APA (7th ed.) Citation

Dalheimer, M., Kaufman, L., & Welsh, M. (1999). Running Linux, Third Edition (3rd edition.). O'Reilly Media, Inc..

Chicago Style (17th ed.) Citation

Dalheimer, Matthias, Lar Kaufman, and Matt Welsh. Running Linux, Third Edition. 3rd edition. O'Reilly Media, Inc., 1999.

MLA (9th ed.) Citation

Dalheimer, Matthias, et al. Running Linux, Third Edition. 3rd edition. O'Reilly Media, Inc., 1999.