| APA | EM. (2012, February 9). In Acronym Geek. Retrieved 16:07, February 9, 2012, from http://www.acronymgeek.com/EM |
| MLA | "EM." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/EM>. |
| MHRA | 'EM', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/EM> [accessed 9 February 2012] |
| Chicago | "EM", http://www.acronymgeek.com/EM (accessed February 9, 2012). |
| CBE/CSE | EM [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/EM. |
| Bluebook | EM, http://www.acronymgeek.com/EM (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EM, http://www.acronymgeek.com/EM (optional description here) (as of Feb. 9, 2012, 16:07). |
| AMA | EM. Acronym Geek. February 9, 2012, 16:07. Available at: http://www.acronymgeek.com/EM. Accessed February 9, 2012, 16:07. |