| APA | BTUP. (2012, February 15). In Acronym Geek. Retrieved 11:12, February 15, 2012, from http://www.acronymgeek.com/BTUP |
| MLA | "BTUP." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/BTUP>. |
| MHRA | 'BTUP', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/BTUP> [accessed 15 February 2012] |
| Chicago | "BTUP", http://www.acronymgeek.com/BTUP (accessed February 15, 2012). |
| CBE/CSE | BTUP [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/BTUP. |
| Bluebook | BTUP, http://www.acronymgeek.com/BTUP (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BTUP, http://www.acronymgeek.com/BTUP (optional description here) (as of Feb. 15, 2012, 11:12). |
| AMA | BTUP. Acronym Geek. February 15, 2012, 11:12. Available at: http://www.acronymgeek.com/BTUP. Accessed February 15, 2012, 11:12. |