| APA | PTCE. (2012, February 12). In Acronym Geek. Retrieved 01:19, February 12, 2012, from http://www.acronymgeek.com/PTCE |
| MLA | "PTCE." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/PTCE>. |
| MHRA | 'PTCE', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/PTCE> [accessed 12 February 2012] |
| Chicago | "PTCE", http://www.acronymgeek.com/PTCE (accessed February 12, 2012). |
| CBE/CSE | PTCE [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/PTCE. |
| Bluebook | PTCE, http://www.acronymgeek.com/PTCE (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PTCE, http://www.acronymgeek.com/PTCE (optional description here) (as of Feb. 12, 2012, 01:19). |
| AMA | PTCE. Acronym Geek. February 12, 2012, 01:19. Available at: http://www.acronymgeek.com/PTCE. Accessed February 12, 2012, 01:19. |