| APA | AC4A. (2012, February 15). In Acronym Geek. Retrieved 23:43, February 15, 2012, from http://www.acronymgeek.com/AC4A |
| MLA | "AC4A." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/AC4A>. |
| MHRA | 'AC4A', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/AC4A> [accessed 15 February 2012] |
| Chicago | "AC4A", http://www.acronymgeek.com/AC4A (accessed February 15, 2012). |
| CBE/CSE | AC4A [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/AC4A. |
| Bluebook | AC4A, http://www.acronymgeek.com/AC4A (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, AC4A, http://www.acronymgeek.com/AC4A (optional description here) (as of Feb. 15, 2012, 23:43). |
| AMA | AC4A. Acronym Geek. February 15, 2012, 23:43. Available at: http://www.acronymgeek.com/AC4A. Accessed February 15, 2012, 23:43. |