| APA | GFBK. (2012, February 15). In Acronym Geek. Retrieved 19:06, February 15, 2012, from http://www.acronymgeek.com/GFBK |
| MLA | "GFBK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/GFBK>. |
| MHRA | 'GFBK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/GFBK> [accessed 15 February 2012] |
| Chicago | "GFBK", http://www.acronymgeek.com/GFBK (accessed February 15, 2012). |
| CBE/CSE | GFBK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/GFBK. |
| Bluebook | GFBK, http://www.acronymgeek.com/GFBK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GFBK, http://www.acronymgeek.com/GFBK (optional description here) (as of Feb. 15, 2012, 19:06). |
| AMA | GFBK. Acronym Geek. February 15, 2012, 19:06. Available at: http://www.acronymgeek.com/GFBK. Accessed February 15, 2012, 19:06. |