| APA | BTEL. (2012, February 14). In Acronym Geek. Retrieved 15:34, February 14, 2012, from http://www.acronymgeek.com/BTEL |
| MLA | "BTEL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/BTEL>. |
| MHRA | 'BTEL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/BTEL> [accessed 14 February 2012] |
| Chicago | "BTEL", http://www.acronymgeek.com/BTEL (accessed February 14, 2012). |
| CBE/CSE | BTEL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/BTEL. |
| Bluebook | BTEL, http://www.acronymgeek.com/BTEL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BTEL, http://www.acronymgeek.com/BTEL (optional description here) (as of Feb. 14, 2012, 15:34). |
| AMA | BTEL. Acronym Geek. February 14, 2012, 15:34. Available at: http://www.acronymgeek.com/BTEL. Accessed February 14, 2012, 15:34. |