| APA | ESOR. (2012, February 14). In Acronym Geek. Retrieved 18:19, February 14, 2012, from http://www.acronymgeek.com/ESOR |
| MLA | "ESOR." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ESOR>. |
| MHRA | 'ESOR', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ESOR> [accessed 14 February 2012] |
| Chicago | "ESOR", http://www.acronymgeek.com/ESOR (accessed February 14, 2012). |
| CBE/CSE | ESOR [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ESOR. |
| Bluebook | ESOR, http://www.acronymgeek.com/ESOR (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ESOR, http://www.acronymgeek.com/ESOR (optional description here) (as of Feb. 14, 2012, 18:19). |
| AMA | ESOR. Acronym Geek. February 14, 2012, 18:19. Available at: http://www.acronymgeek.com/ESOR. Accessed February 14, 2012, 18:19. |