| APA | GEPX. (2012, February 12). In Acronym Geek. Retrieved 12:44, February 12, 2012, from http://www.acronymgeek.com/GEPX |
| MLA | "GEPX." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/GEPX>. |
| MHRA | 'GEPX', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/GEPX> [accessed 12 February 2012] |
| Chicago | "GEPX", http://www.acronymgeek.com/GEPX (accessed February 12, 2012). |
| CBE/CSE | GEPX [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/GEPX. |
| Bluebook | GEPX, http://www.acronymgeek.com/GEPX (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GEPX, http://www.acronymgeek.com/GEPX (optional description here) (as of Feb. 12, 2012, 12:44). |
| AMA | GEPX. Acronym Geek. February 12, 2012, 12:44. Available at: http://www.acronymgeek.com/GEPX. Accessed February 12, 2012, 12:44. |