| APA | GEPN. (2012, February 17). In Acronym Geek. Retrieved 01:28, February 17, 2012, from http://www.acronymgeek.com/GEPN |
| MLA | "GEPN." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/GEPN>. |
| MHRA | 'GEPN', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/GEPN> [accessed 17 February 2012] |
| Chicago | "GEPN", http://www.acronymgeek.com/GEPN (accessed February 17, 2012). |
| CBE/CSE | GEPN [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/GEPN. |
| Bluebook | GEPN, http://www.acronymgeek.com/GEPN (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GEPN, http://www.acronymgeek.com/GEPN (optional description here) (as of Feb. 17, 2012, 01:28). |
| AMA | GEPN. Acronym Geek. February 17, 2012, 01:28. Available at: http://www.acronymgeek.com/GEPN. Accessed February 17, 2012, 01:28. |