| APA | PABX. (2012, February 10). In Acronym Geek. Retrieved 11:58, February 10, 2012, from http://www.acronymgeek.com/PABX |
| MLA | "PABX." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/PABX>. |
| MHRA | 'PABX', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/PABX> [accessed 10 February 2012] |
| Chicago | "PABX", http://www.acronymgeek.com/PABX (accessed February 10, 2012). |
| CBE/CSE | PABX [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/PABX. |
| Bluebook | PABX, http://www.acronymgeek.com/PABX (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PABX, http://www.acronymgeek.com/PABX (optional description here) (as of Feb. 10, 2012, 11:58). |
| AMA | PABX. Acronym Geek. February 10, 2012, 11:58. Available at: http://www.acronymgeek.com/PABX. Accessed February 10, 2012, 11:58. |