| APA | EM1. (2012, February 11). In Acronym Geek. Retrieved 17:13, February 11, 2012, from http://www.acronymgeek.com/EM1 |
| MLA | "EM1." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/EM1>. |
| MHRA | 'EM1', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/EM1> [accessed 11 February 2012] |
| Chicago | "EM1", http://www.acronymgeek.com/EM1 (accessed February 11, 2012). |
| CBE/CSE | EM1 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/EM1. |
| Bluebook | EM1, http://www.acronymgeek.com/EM1 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EM1, http://www.acronymgeek.com/EM1 (optional description here) (as of Feb. 11, 2012, 17:13). |
| AMA | EM1. Acronym Geek. February 11, 2012, 17:13. Available at: http://www.acronymgeek.com/EM1. Accessed February 11, 2012, 17:13. |