| APA | TTOP. (2012, February 16). In Acronym Geek. Retrieved 11:42, February 16, 2012, from http://www.acronymgeek.com/TTOP |
| MLA | "TTOP." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/TTOP>. |
| MHRA | 'TTOP', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/TTOP> [accessed 16 February 2012] |
| Chicago | "TTOP", http://www.acronymgeek.com/TTOP (accessed February 16, 2012). |
| CBE/CSE | TTOP [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/TTOP. |
| Bluebook | TTOP, http://www.acronymgeek.com/TTOP (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, TTOP, http://www.acronymgeek.com/TTOP (optional description here) (as of Feb. 16, 2012, 11:42). |
| AMA | TTOP. Acronym Geek. February 16, 2012, 11:42. Available at: http://www.acronymgeek.com/TTOP. Accessed February 16, 2012, 11:42. |