| APA | XAU. (2012, February 11). In Acronym Geek. Retrieved 21:59, February 11, 2012, from http://www.acronymgeek.com/XAU |
| MLA | "XAU." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/XAU>. |
| MHRA | 'XAU', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/XAU> [accessed 11 February 2012] |
| Chicago | "XAU", http://www.acronymgeek.com/XAU (accessed February 11, 2012). |
| CBE/CSE | XAU [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/XAU. |
| Bluebook | XAU, http://www.acronymgeek.com/XAU (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, XAU, http://www.acronymgeek.com/XAU (optional description here) (as of Feb. 11, 2012, 21:59). |
| AMA | XAU. Acronym Geek. February 11, 2012, 21:59. Available at: http://www.acronymgeek.com/XAU. Accessed February 11, 2012, 21:59. |