| APA | PNEA. (2012, February 17). In Acronym Geek. Retrieved 03:04, February 17, 2012, from http://www.acronymgeek.com/PNEA |
| MLA | "PNEA." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/PNEA>. |
| MHRA | 'PNEA', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/PNEA> [accessed 17 February 2012] |
| Chicago | "PNEA", http://www.acronymgeek.com/PNEA (accessed February 17, 2012). |
| CBE/CSE | PNEA [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/PNEA. |
| Bluebook | PNEA, http://www.acronymgeek.com/PNEA (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PNEA, http://www.acronymgeek.com/PNEA (optional description here) (as of Feb. 17, 2012, 03:04). |
| AMA | PNEA. Acronym Geek. February 17, 2012, 03:04. Available at: http://www.acronymgeek.com/PNEA. Accessed February 17, 2012, 03:04. |