| APA | PUEN. (2012, February 16). In Acronym Geek. Retrieved 08:28, February 16, 2012, from http://www.acronymgeek.com/PUEN |
| MLA | "PUEN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PUEN>. |
| MHRA | 'PUEN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PUEN> [accessed 16 February 2012] |
| Chicago | "PUEN", http://www.acronymgeek.com/PUEN (accessed February 16, 2012). |
| CBE/CSE | PUEN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PUEN. |
| Bluebook | PUEN, http://www.acronymgeek.com/PUEN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PUEN, http://www.acronymgeek.com/PUEN (optional description here) (as of Feb. 16, 2012, 08:28). |
| AMA | PUEN. Acronym Geek. February 16, 2012, 08:28. Available at: http://www.acronymgeek.com/PUEN. Accessed February 16, 2012, 08:28. |