| APA | BTDT. (2012, February 16). In Acronym Geek. Retrieved 06:30, February 16, 2012, from http://www.acronymgeek.com/BTDT |
| MLA | "BTDT." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/BTDT>. |
| MHRA | 'BTDT', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/BTDT> [accessed 16 February 2012] |
| Chicago | "BTDT", http://www.acronymgeek.com/BTDT (accessed February 16, 2012). |
| CBE/CSE | BTDT [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/BTDT. |
| Bluebook | BTDT, http://www.acronymgeek.com/BTDT (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BTDT, http://www.acronymgeek.com/BTDT (optional description here) (as of Feb. 16, 2012, 06:30). |
| AMA | BTDT. Acronym Geek. February 16, 2012, 06:30. Available at: http://www.acronymgeek.com/BTDT. Accessed February 16, 2012, 06:30. |