| APA | ACKO. (2012, February 17). In Acronym Geek. Retrieved 07:12, February 17, 2012, from http://www.acronymgeek.com/ACKO |
| MLA | "ACKO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ACKO>. |
| MHRA | 'ACKO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ACKO> [accessed 17 February 2012] |
| Chicago | "ACKO", http://www.acronymgeek.com/ACKO (accessed February 17, 2012). |
| CBE/CSE | ACKO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ACKO. |
| Bluebook | ACKO, http://www.acronymgeek.com/ACKO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ACKO, http://www.acronymgeek.com/ACKO (optional description here) (as of Feb. 17, 2012, 07:12). |
| AMA | ACKO. Acronym Geek. February 17, 2012, 07:12. Available at: http://www.acronymgeek.com/ACKO. Accessed February 17, 2012, 07:12. |