| APA | TUI. (2012, February 14). In Acronym Geek. Retrieved 19:26, February 14, 2012, from http://www.acronymgeek.com/TUI |
| MLA | "TUI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/TUI>. |
| MHRA | 'TUI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/TUI> [accessed 14 February 2012] |
| Chicago | "TUI", http://www.acronymgeek.com/TUI (accessed February 14, 2012). |
| CBE/CSE | TUI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/TUI. |
| Bluebook | TUI, http://www.acronymgeek.com/TUI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, TUI, http://www.acronymgeek.com/TUI (optional description here) (as of Feb. 14, 2012, 19:26). |
| AMA | TUI. Acronym Geek. February 14, 2012, 19:26. Available at: http://www.acronymgeek.com/TUI. Accessed February 14, 2012, 19:26. |