| APA | GTEF. (2012, February 16). In Acronym Geek. Retrieved 08:32, February 16, 2012, from http://www.acronymgeek.com/GTEF |
| MLA | "GTEF." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/GTEF>. |
| MHRA | 'GTEF', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/GTEF> [accessed 16 February 2012] |
| Chicago | "GTEF", http://www.acronymgeek.com/GTEF (accessed February 16, 2012). |
| CBE/CSE | GTEF [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/GTEF. |
| Bluebook | GTEF, http://www.acronymgeek.com/GTEF (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GTEF, http://www.acronymgeek.com/GTEF (optional description here) (as of Feb. 16, 2012, 08:32). |
| AMA | GTEF. Acronym Geek. February 16, 2012, 08:32. Available at: http://www.acronymgeek.com/GTEF. Accessed February 16, 2012, 08:32. |