| APA | PTOC. (2012, February 16). In Acronym Geek. Retrieved 11:07, February 16, 2012, from http://www.acronymgeek.com/PTOC |
| MLA | "PTOC." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PTOC>. |
| MHRA | 'PTOC', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PTOC> [accessed 16 February 2012] |
| Chicago | "PTOC", http://www.acronymgeek.com/PTOC (accessed February 16, 2012). |
| CBE/CSE | PTOC [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PTOC. |
| Bluebook | PTOC, http://www.acronymgeek.com/PTOC (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PTOC, http://www.acronymgeek.com/PTOC (optional description here) (as of Feb. 16, 2012, 11:07). |
| AMA | PTOC. Acronym Geek. February 16, 2012, 11:07. Available at: http://www.acronymgeek.com/PTOC. Accessed February 16, 2012, 11:07. |