| APA | GCF. (2012, February 4). In Acronym Geek. Retrieved 12:00, February 4, 2012, from http://www.acronymgeek.com/GCF |
| MLA | "GCF." Acronym Geek. (2012). Acronym Geek. 4 Feb 2012 <http://www.acronymgeek.com/GCF>. |
| MHRA | 'GCF', Acronym Geek, 4 February 2012, <http://www.acronymgeek.com/GCF> [accessed 4 February 2012] |
| Chicago | "GCF", http://www.acronymgeek.com/GCF (accessed February 4, 2012). |
| CBE/CSE | GCF [Internet]. Acronym Geek; 2012 Feb 4 [cited 2012 Feb 4]. Available from: http://www.acronymgeek.com/GCF. |
| Bluebook | GCF, http://www.acronymgeek.com/GCF (last visited February 4, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GCF, http://www.acronymgeek.com/GCF (optional description here) (as of Feb. 4, 2012, 12:00). |
| AMA | GCF. Acronym Geek. February 4, 2012, 12:00. Available at: http://www.acronymgeek.com/GCF. Accessed February 4, 2012, 12:00. |