| APA | PTNS. (2012, February 14). In Acronym Geek. Retrieved 14:23, February 14, 2012, from http://www.acronymgeek.com/PTNS |
| MLA | "PTNS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/PTNS>. |
| MHRA | 'PTNS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/PTNS> [accessed 14 February 2012] |
| Chicago | "PTNS", http://www.acronymgeek.com/PTNS (accessed February 14, 2012). |
| CBE/CSE | PTNS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/PTNS. |
| Bluebook | PTNS, http://www.acronymgeek.com/PTNS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PTNS, http://www.acronymgeek.com/PTNS (optional description here) (as of Feb. 14, 2012, 14:23). |
| AMA | PTNS. Acronym Geek. February 14, 2012, 14:23. Available at: http://www.acronymgeek.com/PTNS. Accessed February 14, 2012, 14:23. |