| APA | PTCAD. (2012, February 12). In Acronym Geek. Retrieved 12:14, February 12, 2012, from http://www.acronymgeek.com/PTCAD |
| MLA | "PTCAD." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/PTCAD>. |
| MHRA | 'PTCAD', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/PTCAD> [accessed 12 February 2012] |
| Chicago | "PTCAD", http://www.acronymgeek.com/PTCAD (accessed February 12, 2012). |
| CBE/CSE | PTCAD [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/PTCAD. |
| Bluebook | PTCAD, http://www.acronymgeek.com/PTCAD (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PTCAD, http://www.acronymgeek.com/PTCAD (optional description here) (as of Feb. 12, 2012, 12:14). |
| AMA | PTCAD. Acronym Geek. February 12, 2012, 12:14. Available at: http://www.acronymgeek.com/PTCAD. Accessed February 12, 2012, 12:14. |