| APA | 4NCL. (2012, February 17). In Acronym Geek. Retrieved 01:15, February 17, 2012, from http://www.acronymgeek.com/4NCL |
| MLA | "4NCL." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/4NCL>. |
| MHRA | '4NCL', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/4NCL> [accessed 17 February 2012] |
| Chicago | "4NCL", http://www.acronymgeek.com/4NCL (accessed February 17, 2012). |
| CBE/CSE | 4NCL [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/4NCL. |
| Bluebook | 4NCL, http://www.acronymgeek.com/4NCL (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4NCL, http://www.acronymgeek.com/4NCL (optional description here) (as of Feb. 17, 2012, 01:15). |
| AMA | 4NCL. Acronym Geek. February 17, 2012, 01:15. Available at: http://www.acronymgeek.com/4NCL. Accessed February 17, 2012, 01:15. |