| APA | NATL. (2012, February 15). In Acronym Geek. Retrieved 13:22, February 15, 2012, from http://www.acronymgeek.com/NATL |
| MLA | "NATL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/NATL>. |
| MHRA | 'NATL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/NATL> [accessed 15 February 2012] |
| Chicago | "NATL", http://www.acronymgeek.com/NATL (accessed February 15, 2012). |
| CBE/CSE | NATL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/NATL. |
| Bluebook | NATL, http://www.acronymgeek.com/NATL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NATL, http://www.acronymgeek.com/NATL (optional description here) (as of Feb. 15, 2012, 13:22). |
| AMA | NATL. Acronym Geek. February 15, 2012, 13:22. Available at: http://www.acronymgeek.com/NATL. Accessed February 15, 2012, 13:22. |