| APA | GEM. (2012, February 9). In Acronym Geek. Retrieved 20:27, February 9, 2012, from http://www.acronymgeek.com/GEM |
| MLA | "GEM." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/GEM>. |
| MHRA | 'GEM', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/GEM> [accessed 9 February 2012] |
| Chicago | "GEM", http://www.acronymgeek.com/GEM (accessed February 9, 2012). |
| CBE/CSE | GEM [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/GEM. |
| Bluebook | GEM, http://www.acronymgeek.com/GEM (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GEM, http://www.acronymgeek.com/GEM (optional description here) (as of Feb. 9, 2012, 20:27). |
| AMA | GEM. Acronym Geek. February 9, 2012, 20:27. Available at: http://www.acronymgeek.com/GEM. Accessed February 9, 2012, 20:27. |