| APA | PIYN. (2012, February 16). In Acronym Geek. Retrieved 02:24, February 16, 2012, from http://www.acronymgeek.com/PIYN |
| MLA | "PIYN." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PIYN>. |
| MHRA | 'PIYN', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PIYN> [accessed 16 February 2012] |
| Chicago | "PIYN", http://www.acronymgeek.com/PIYN (accessed February 16, 2012). |
| CBE/CSE | PIYN [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PIYN. |
| Bluebook | PIYN, http://www.acronymgeek.com/PIYN (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PIYN, http://www.acronymgeek.com/PIYN (optional description here) (as of Feb. 16, 2012, 02:24). |
| AMA | PIYN. Acronym Geek. February 16, 2012, 02:24. Available at: http://www.acronymgeek.com/PIYN. Accessed February 16, 2012, 02:24. |