| APA | IPE. (2012, February 9). In Acronym Geek. Retrieved 21:00, February 9, 2012, from http://www.acronymgeek.com/IPE |
| MLA | "IPE." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/IPE>. |
| MHRA | 'IPE', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/IPE> [accessed 9 February 2012] |
| Chicago | "IPE", http://www.acronymgeek.com/IPE (accessed February 9, 2012). |
| CBE/CSE | IPE [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/IPE. |
| Bluebook | IPE, http://www.acronymgeek.com/IPE (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, IPE, http://www.acronymgeek.com/IPE (optional description here) (as of Feb. 9, 2012, 21:00). |
| AMA | IPE. Acronym Geek. February 9, 2012, 21:00. Available at: http://www.acronymgeek.com/IPE. Accessed February 9, 2012, 21:00. |