| APA | PUECN. (2012, February 12). In Acronym Geek. Retrieved 12:21, February 12, 2012, from http://www.acronymgeek.com/PUECN |
| MLA | "PUECN." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/PUECN>. |
| MHRA | 'PUECN', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/PUECN> [accessed 12 February 2012] |
| Chicago | "PUECN", http://www.acronymgeek.com/PUECN (accessed February 12, 2012). |
| CBE/CSE | PUECN [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/PUECN. |
| Bluebook | PUECN, http://www.acronymgeek.com/PUECN (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PUECN, http://www.acronymgeek.com/PUECN (optional description here) (as of Feb. 12, 2012, 12:21). |
| AMA | PUECN. Acronym Geek. February 12, 2012, 12:21. Available at: http://www.acronymgeek.com/PUECN. Accessed February 12, 2012, 12:21. |