| APA | PTCW. (2012, February 15). In Acronym Geek. Retrieved 21:20, February 15, 2012, from http://www.acronymgeek.com/PTCW |
| MLA | "PTCW." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PTCW>. |
| MHRA | 'PTCW', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PTCW> [accessed 15 February 2012] |
| Chicago | "PTCW", http://www.acronymgeek.com/PTCW (accessed February 15, 2012). |
| CBE/CSE | PTCW [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PTCW. |
| Bluebook | PTCW, http://www.acronymgeek.com/PTCW (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PTCW, http://www.acronymgeek.com/PTCW (optional description here) (as of Feb. 15, 2012, 21:20). |
| AMA | PTCW. Acronym Geek. February 15, 2012, 21:20. Available at: http://www.acronymgeek.com/PTCW. Accessed February 15, 2012, 21:20. |