| APA | GFCS. (2012, February 14). In Acronym Geek. Retrieved 13:47, February 14, 2012, from http://www.acronymgeek.com/GFCS |
| MLA | "GFCS." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/GFCS>. |
| MHRA | 'GFCS', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/GFCS> [accessed 14 February 2012] |
| Chicago | "GFCS", http://www.acronymgeek.com/GFCS (accessed February 14, 2012). |
| CBE/CSE | GFCS [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/GFCS. |
| Bluebook | GFCS, http://www.acronymgeek.com/GFCS (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GFCS, http://www.acronymgeek.com/GFCS (optional description here) (as of Feb. 14, 2012, 13:47). |
| AMA | GFCS. Acronym Geek. February 14, 2012, 13:47. Available at: http://www.acronymgeek.com/GFCS. Accessed February 14, 2012, 13:47. |