| APA | GSFG. (2012, February 17). In Acronym Geek. Retrieved 00:04, February 17, 2012, from http://www.acronymgeek.com/GSFG |
| MLA | "GSFG." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/GSFG>. |
| MHRA | 'GSFG', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/GSFG> [accessed 17 February 2012] |
| Chicago | "GSFG", http://www.acronymgeek.com/GSFG (accessed February 17, 2012). |
| CBE/CSE | GSFG [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/GSFG. |
| Bluebook | GSFG, http://www.acronymgeek.com/GSFG (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GSFG, http://www.acronymgeek.com/GSFG (optional description here) (as of Feb. 17, 2012, 00:04). |
| AMA | GSFG. Acronym Geek. February 17, 2012, 00:04. Available at: http://www.acronymgeek.com/GSFG. Accessed February 17, 2012, 00:04. |