| APA | ELK. (2012, February 13). In Acronym Geek. Retrieved 21:59, February 13, 2012, from http://www.acronymgeek.com/ELK |
| MLA | "ELK." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/ELK>. |
| MHRA | 'ELK', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/ELK> [accessed 13 February 2012] |
| Chicago | "ELK", http://www.acronymgeek.com/ELK (accessed February 13, 2012). |
| CBE/CSE | ELK [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/ELK. |
| Bluebook | ELK, http://www.acronymgeek.com/ELK (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ELK, http://www.acronymgeek.com/ELK (optional description here) (as of Feb. 13, 2012, 21:59). |
| AMA | ELK. Acronym Geek. February 13, 2012, 21:59. Available at: http://www.acronymgeek.com/ELK. Accessed February 13, 2012, 21:59. |