| APA | DIRN. (2012, February 15). In Acronym Geek. Retrieved 22:14, February 15, 2012, from http://www.acronymgeek.com/DIRN |
| MLA | "DIRN." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DIRN>. |
| MHRA | 'DIRN', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DIRN> [accessed 15 February 2012] |
| Chicago | "DIRN", http://www.acronymgeek.com/DIRN (accessed February 15, 2012). |
| CBE/CSE | DIRN [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DIRN. |
| Bluebook | DIRN, http://www.acronymgeek.com/DIRN (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DIRN, http://www.acronymgeek.com/DIRN (optional description here) (as of Feb. 15, 2012, 22:14). |
| AMA | DIRN. Acronym Geek. February 15, 2012, 22:14. Available at: http://www.acronymgeek.com/DIRN. Accessed February 15, 2012, 22:14. |