| APA | ATO. (2012, February 9). In Acronym Geek. Retrieved 13:07, February 9, 2012, from http://www.acronymgeek.com/ATO |
| MLA | "ATO." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/ATO>. |
| MHRA | 'ATO', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/ATO> [accessed 9 February 2012] |
| Chicago | "ATO", http://www.acronymgeek.com/ATO (accessed February 9, 2012). |
| CBE/CSE | ATO [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/ATO. |
| Bluebook | ATO, http://www.acronymgeek.com/ATO (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ATO, http://www.acronymgeek.com/ATO (optional description here) (as of Feb. 9, 2012, 13:07). |
| AMA | ATO. Acronym Geek. February 9, 2012, 13:07. Available at: http://www.acronymgeek.com/ATO. Accessed February 9, 2012, 13:07. |