| APA | B20. (2012, February 13). In Acronym Geek. Retrieved 21:01, February 13, 2012, from http://www.acronymgeek.com/B20 |
| MLA | "B20." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/B20>. |
| MHRA | 'B20', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/B20> [accessed 13 February 2012] |
| Chicago | "B20", http://www.acronymgeek.com/B20 (accessed February 13, 2012). |
| CBE/CSE | B20 [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/B20. |
| Bluebook | B20, http://www.acronymgeek.com/B20 (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, B20, http://www.acronymgeek.com/B20 (optional description here) (as of Feb. 13, 2012, 21:01). |
| AMA | B20. Acronym Geek. February 13, 2012, 21:01. Available at: http://www.acronymgeek.com/B20. Accessed February 13, 2012, 21:01. |