| APA | VOIP. (2012, February 9). In Acronym Geek. Retrieved 12:03, February 9, 2012, from http://www.acronymgeek.com/VOIP |
| MLA | "VOIP." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/VOIP>. |
| MHRA | 'VOIP', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/VOIP> [accessed 9 February 2012] |
| Chicago | "VOIP", http://www.acronymgeek.com/VOIP (accessed February 9, 2012). |
| CBE/CSE | VOIP [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/VOIP. |
| Bluebook | VOIP, http://www.acronymgeek.com/VOIP (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, VOIP, http://www.acronymgeek.com/VOIP (optional description here) (as of Feb. 9, 2012, 12:03). |
| AMA | VOIP. Acronym Geek. February 9, 2012, 12:03. Available at: http://www.acronymgeek.com/VOIP. Accessed February 9, 2012, 12:03. |