| APA | BTDL. (2012, February 15). In Acronym Geek. Retrieved 11:16, February 15, 2012, from http://www.acronymgeek.com/BTDL |
| MLA | "BTDL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/BTDL>. |
| MHRA | 'BTDL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/BTDL> [accessed 15 February 2012] |
| Chicago | "BTDL", http://www.acronymgeek.com/BTDL (accessed February 15, 2012). |
| CBE/CSE | BTDL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/BTDL. |
| Bluebook | BTDL, http://www.acronymgeek.com/BTDL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BTDL, http://www.acronymgeek.com/BTDL (optional description here) (as of Feb. 15, 2012, 11:16). |
| AMA | BTDL. Acronym Geek. February 15, 2012, 11:16. Available at: http://www.acronymgeek.com/BTDL. Accessed February 15, 2012, 11:16. |