| APA | BTUF. (2012, February 14). In Acronym Geek. Retrieved 18:18, February 14, 2012, from http://www.acronymgeek.com/BTUF |
| MLA | "BTUF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/BTUF>. |
| MHRA | 'BTUF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/BTUF> [accessed 14 February 2012] |
| Chicago | "BTUF", http://www.acronymgeek.com/BTUF (accessed February 14, 2012). |
| CBE/CSE | BTUF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/BTUF. |
| Bluebook | BTUF, http://www.acronymgeek.com/BTUF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BTUF, http://www.acronymgeek.com/BTUF (optional description here) (as of Feb. 14, 2012, 18:18). |
| AMA | BTUF. Acronym Geek. February 14, 2012, 18:18. Available at: http://www.acronymgeek.com/BTUF. Accessed February 14, 2012, 18:18. |