| APA | GSEF. (2012, February 14). In Acronym Geek. Retrieved 20:03, February 14, 2012, from http://www.acronymgeek.com/GSEF |
| MLA | "GSEF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GSEF>. |
| MHRA | 'GSEF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GSEF> [accessed 14 February 2012] |
| Chicago | "GSEF", http://www.acronymgeek.com/GSEF (accessed February 14, 2012). |
| CBE/CSE | GSEF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GSEF. |
| Bluebook | GSEF, http://www.acronymgeek.com/GSEF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GSEF, http://www.acronymgeek.com/GSEF (optional description here) (as of Feb. 14, 2012, 20:03). |
| AMA | GSEF. Acronym Geek. February 14, 2012, 20:03. Available at: http://www.acronymgeek.com/GSEF. Accessed February 14, 2012, 20:03. |