| APA | UCN. (2012, February 13). In Acronym Geek. Retrieved 22:00, February 13, 2012, from http://www.acronymgeek.com/UCN |
| MLA | "UCN." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/UCN>. |
| MHRA | 'UCN', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/UCN> [accessed 13 February 2012] |
| Chicago | "UCN", http://www.acronymgeek.com/UCN (accessed February 13, 2012). |
| CBE/CSE | UCN [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/UCN. |
| Bluebook | UCN, http://www.acronymgeek.com/UCN (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, UCN, http://www.acronymgeek.com/UCN (optional description here) (as of Feb. 13, 2012, 22:00). |
| AMA | UCN. Acronym Geek. February 13, 2012, 22:00. Available at: http://www.acronymgeek.com/UCN. Accessed February 13, 2012, 22:00. |