| APA | ELO. (2012, February 9). In Acronym Geek. Retrieved 18:32, February 9, 2012, from http://www.acronymgeek.com/ELO |
| MLA | "ELO." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/ELO>. |
| MHRA | 'ELO', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/ELO> [accessed 9 February 2012] |
| Chicago | "ELO", http://www.acronymgeek.com/ELO (accessed February 9, 2012). |
| CBE/CSE | ELO [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/ELO. |
| Bluebook | ELO, http://www.acronymgeek.com/ELO (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ELO, http://www.acronymgeek.com/ELO (optional description here) (as of Feb. 9, 2012, 18:32). |
| AMA | ELO. Acronym Geek. February 9, 2012, 18:32. Available at: http://www.acronymgeek.com/ELO. Accessed February 9, 2012, 18:32. |