| APA | GYEI. (2012, February 14). In Acronym Geek. Retrieved 17:22, February 14, 2012, from http://www.acronymgeek.com/GYEI |
| MLA | "GYEI." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GYEI>. |
| MHRA | 'GYEI', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GYEI> [accessed 14 February 2012] |
| Chicago | "GYEI", http://www.acronymgeek.com/GYEI (accessed February 14, 2012). |
| CBE/CSE | GYEI [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GYEI. |
| Bluebook | GYEI, http://www.acronymgeek.com/GYEI (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GYEI, http://www.acronymgeek.com/GYEI (optional description here) (as of Feb. 14, 2012, 17:22). |
| AMA | GYEI. Acronym Geek. February 14, 2012, 17:22. Available at: http://www.acronymgeek.com/GYEI. Accessed February 14, 2012, 17:22. |