| APA | ARK.. (2012, February 12). In Acronym Geek. Retrieved 00:48, February 12, 2012, from http://www.acronymgeek.com/ARK. |
| MLA | "ARK.." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/ARK.>. |
| MHRA | 'ARK.', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/ARK.> [accessed 12 February 2012] |
| Chicago | "ARK.", http://www.acronymgeek.com/ARK. (accessed February 12, 2012). |
| CBE/CSE | ARK. [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/ARK.. |
| Bluebook | ARK., http://www.acronymgeek.com/ARK. (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ARK., http://www.acronymgeek.com/ARK. (optional description here) (as of Feb. 12, 2012, 00:48). |
| AMA | ARK.. Acronym Geek. February 12, 2012, 00:48. Available at: http://www.acronymgeek.com/ARK.. Accessed February 12, 2012, 00:48. |