| APA | NEPI. (2012, February 16). In Acronym Geek. Retrieved 21:25, February 16, 2012, from http://www.acronymgeek.com/NEPI |
| MLA | "NEPI." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/NEPI>. |
| MHRA | 'NEPI', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/NEPI> [accessed 16 February 2012] |
| Chicago | "NEPI", http://www.acronymgeek.com/NEPI (accessed February 16, 2012). |
| CBE/CSE | NEPI [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/NEPI. |
| Bluebook | NEPI, http://www.acronymgeek.com/NEPI (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NEPI, http://www.acronymgeek.com/NEPI (optional description here) (as of Feb. 16, 2012, 21:25). |
| AMA | NEPI. Acronym Geek. February 16, 2012, 21:25. Available at: http://www.acronymgeek.com/NEPI. Accessed February 16, 2012, 21:25. |