| APA | TTPO. (2012, February 16). In Acronym Geek. Retrieved 10:11, February 16, 2012, from http://www.acronymgeek.com/TTPO |
| MLA | "TTPO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/TTPO>. |
| MHRA | 'TTPO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/TTPO> [accessed 16 February 2012] |
| Chicago | "TTPO", http://www.acronymgeek.com/TTPO (accessed February 16, 2012). |
| CBE/CSE | TTPO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/TTPO. |
| Bluebook | TTPO, http://www.acronymgeek.com/TTPO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, TTPO, http://www.acronymgeek.com/TTPO (optional description here) (as of Feb. 16, 2012, 10:11). |
| AMA | TTPO. Acronym Geek. February 16, 2012, 10:11. Available at: http://www.acronymgeek.com/TTPO. Accessed February 16, 2012, 10:11. |