| APA | BUN. (2012, February 10). In Acronym Geek. Retrieved 17:11, February 10, 2012, from http://www.acronymgeek.com/BUN |
| MLA | "BUN." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/BUN>. |
| MHRA | 'BUN', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/BUN> [accessed 10 February 2012] |
| Chicago | "BUN", http://www.acronymgeek.com/BUN (accessed February 10, 2012). |
| CBE/CSE | BUN [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/BUN. |
| Bluebook | BUN, http://www.acronymgeek.com/BUN (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BUN, http://www.acronymgeek.com/BUN (optional description here) (as of Feb. 10, 2012, 17:11). |
| AMA | BUN. Acronym Geek. February 10, 2012, 17:11. Available at: http://www.acronymgeek.com/BUN. Accessed February 10, 2012, 17:11. |