| APA | Voice Over Internet Proctocal (VOIP). (2012, February 13). In Acronym Geek. Retrieved 20:47, February 13, 2012, from http://www.acronymgeek.com/VOIP/Voice_Over_Internet_Proctocal |
| MLA | "Voice Over Internet Proctocal (VOIP)." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/VOIP/Voice_Over_Internet_Proctocal>. |
| MHRA | 'Voice Over Internet Proctocal (VOIP)', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/VOIP/Voice_Over_Internet_Proctocal> [accessed 13 February 2012] |
| Chicago | "Voice Over Internet Proctocal (VOIP)", http://www.acronymgeek.com/VOIP/Voice_Over_Internet_Proctocal (accessed February 13, 2012). |
| CBE/CSE | Voice Over Internet Proctocal (VOIP) [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/VOIP/Voice_Over_Internet_Proctocal. |
| Bluebook | Voice Over Internet Proctocal (VOIP), http://www.acronymgeek.com/VOIP/Voice_Over_Internet_Proctocal (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, Voice Over Internet Proctocal (VOIP), http://www.acronymgeek.com/VOIP/Voice_Over_Internet_Proctocal (optional description here) (as of Feb. 13, 2012, 20:47). |
| AMA | Voice Over Internet Proctocal (VOIP). Acronym Geek. February 13, 2012, 20:47. Available at: http://www.acronymgeek.com/VOIP/Voice_Over_Internet_Proctocal. Accessed February 13, 2012, 20:47. |