| APA | FOK. (2012, February 13). In Acronym Geek. Retrieved 23:14, February 13, 2012, from http://www.acronymgeek.com/FOK |
| MLA | "FOK." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/FOK>. |
| MHRA | 'FOK', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/FOK> [accessed 13 February 2012] |
| Chicago | "FOK", http://www.acronymgeek.com/FOK (accessed February 13, 2012). |
| CBE/CSE | FOK [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/FOK. |
| Bluebook | FOK, http://www.acronymgeek.com/FOK (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FOK, http://www.acronymgeek.com/FOK (optional description here) (as of Feb. 13, 2012, 23:14). |
| AMA | FOK. Acronym Geek. February 13, 2012, 23:14. Available at: http://www.acronymgeek.com/FOK. Accessed February 13, 2012, 23:14. |