| APA | A.U.. (2012, February 11). In Acronym Geek. Retrieved 21:34, February 11, 2012, from http://www.acronymgeek.com/A.U. |
| MLA | "A.U.." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/A.U.>. |
| MHRA | 'A.U.', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/A.U.> [accessed 11 February 2012] |
| Chicago | "A.U.", http://www.acronymgeek.com/A.U. (accessed February 11, 2012). |
| CBE/CSE | A.U. [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/A.U.. |
| Bluebook | A.U., http://www.acronymgeek.com/A.U. (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, A.U., http://www.acronymgeek.com/A.U. (optional description here) (as of Feb. 11, 2012, 21:34). |
| AMA | A.U.. Acronym Geek. February 11, 2012, 21:34. Available at: http://www.acronymgeek.com/A.U.. Accessed February 11, 2012, 21:34. |