| APA | PTCH. (2012, February 15). In Acronym Geek. Retrieved 20:25, February 15, 2012, from http://www.acronymgeek.com/PTCH |
| MLA | "PTCH." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PTCH>. |
| MHRA | 'PTCH', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PTCH> [accessed 15 February 2012] |
| Chicago | "PTCH", http://www.acronymgeek.com/PTCH (accessed February 15, 2012). |
| CBE/CSE | PTCH [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PTCH. |
| Bluebook | PTCH, http://www.acronymgeek.com/PTCH (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PTCH, http://www.acronymgeek.com/PTCH (optional description here) (as of Feb. 15, 2012, 20:25). |
| AMA | PTCH. Acronym Geek. February 15, 2012, 20:25. Available at: http://www.acronymgeek.com/PTCH. Accessed February 15, 2012, 20:25. |