| APA | EPRK. (2012, February 15). In Acronym Geek. Retrieved 03:03, February 15, 2012, from http://www.acronymgeek.com/EPRK |
| MLA | "EPRK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/EPRK>. |
| MHRA | 'EPRK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/EPRK> [accessed 15 February 2012] |
| Chicago | "EPRK", http://www.acronymgeek.com/EPRK (accessed February 15, 2012). |
| CBE/CSE | EPRK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/EPRK. |
| Bluebook | EPRK, http://www.acronymgeek.com/EPRK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EPRK, http://www.acronymgeek.com/EPRK (optional description here) (as of Feb. 15, 2012, 03:03). |
| AMA | EPRK. Acronym Geek. February 15, 2012, 03:03. Available at: http://www.acronymgeek.com/EPRK. Accessed February 15, 2012, 03:03. |