| APA | EXR. (2012, February 15). In Acronym Geek. Retrieved 03:45, February 15, 2012, from http://www.acronymgeek.com/EXR |
| MLA | "EXR." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/EXR>. |
| MHRA | 'EXR', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/EXR> [accessed 15 February 2012] |
| Chicago | "EXR", http://www.acronymgeek.com/EXR (accessed February 15, 2012). |
| CBE/CSE | EXR [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/EXR. |
| Bluebook | EXR, http://www.acronymgeek.com/EXR (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EXR, http://www.acronymgeek.com/EXR (optional description here) (as of Feb. 15, 2012, 03:45). |
| AMA | EXR. Acronym Geek. February 15, 2012, 03:45. Available at: http://www.acronymgeek.com/EXR. Accessed February 15, 2012, 03:45. |