| APA | A/U. (2012, February 12). In Acronym Geek. Retrieved 11:57, February 12, 2012, from http://www.acronymgeek.com/A/U |
| MLA | "A/U." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/A/U>. |
| MHRA | 'A/U', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/A/U> [accessed 12 February 2012] |
| Chicago | "A/U", http://www.acronymgeek.com/A/U (accessed February 12, 2012). |
| CBE/CSE | A/U [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/A/U. |
| Bluebook | A/U, http://www.acronymgeek.com/A/U (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, A/U, http://www.acronymgeek.com/A/U (optional description here) (as of Feb. 12, 2012, 11:57). |
| AMA | A/U. Acronym Geek. February 12, 2012, 11:57. Available at: http://www.acronymgeek.com/A/U. Accessed February 12, 2012, 11:57. |