| APA | 4-C1N. (2012, February 10). In Acronym Geek. Retrieved 09:21, February 10, 2012, from http://www.acronymgeek.com/4-C1N |
| MLA | "4-C1N." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/4-C1N>. |
| MHRA | '4-C1N', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/4-C1N> [accessed 10 February 2012] |
| Chicago | "4-C1N", http://www.acronymgeek.com/4-C1N (accessed February 10, 2012). |
| CBE/CSE | 4-C1N [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/4-C1N. |
| Bluebook | 4-C1N, http://www.acronymgeek.com/4-C1N (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4-C1N, http://www.acronymgeek.com/4-C1N (optional description here) (as of Feb. 10, 2012, 09:21). |
| AMA | 4-C1N. Acronym Geek. February 10, 2012, 09:21. Available at: http://www.acronymgeek.com/4-C1N. Accessed February 10, 2012, 09:21. |