| APA | POPN. (2012, February 16). In Acronym Geek. Retrieved 07:56, February 16, 2012, from http://www.acronymgeek.com/POPN |
| MLA | "POPN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/POPN>. |
| MHRA | 'POPN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/POPN> [accessed 16 February 2012] |
| Chicago | "POPN", http://www.acronymgeek.com/POPN (accessed February 16, 2012). |
| CBE/CSE | POPN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/POPN. |
| Bluebook | POPN, http://www.acronymgeek.com/POPN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, POPN, http://www.acronymgeek.com/POPN (optional description here) (as of Feb. 16, 2012, 07:56). |
| AMA | POPN. Acronym Geek. February 16, 2012, 07:56. Available at: http://www.acronymgeek.com/POPN. Accessed February 16, 2012, 07:56. |