| APA | GFEL. (2012, February 11). In Acronym Geek. Retrieved 21:21, February 11, 2012, from http://www.acronymgeek.com/GFEL |
| MLA | "GFEL." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/GFEL>. |
| MHRA | 'GFEL', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/GFEL> [accessed 11 February 2012] |
| Chicago | "GFEL", http://www.acronymgeek.com/GFEL (accessed February 11, 2012). |
| CBE/CSE | GFEL [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/GFEL. |
| Bluebook | GFEL, http://www.acronymgeek.com/GFEL (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GFEL, http://www.acronymgeek.com/GFEL (optional description here) (as of Feb. 11, 2012, 21:21). |
| AMA | GFEL. Acronym Geek. February 11, 2012, 21:21. Available at: http://www.acronymgeek.com/GFEL. Accessed February 11, 2012, 21:21. |