| APA | FOC. (2012, February 14). In Acronym Geek. Retrieved 09:49, February 14, 2012, from http://www.acronymgeek.com/FOC |
| MLA | "FOC." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/FOC>. |
| MHRA | 'FOC', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/FOC> [accessed 14 February 2012] |
| Chicago | "FOC", http://www.acronymgeek.com/FOC (accessed February 14, 2012). |
| CBE/CSE | FOC [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/FOC. |
| Bluebook | FOC, http://www.acronymgeek.com/FOC (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, FOC, http://www.acronymgeek.com/FOC (optional description here) (as of Feb. 14, 2012, 09:49). |
| AMA | FOC. Acronym Geek. February 14, 2012, 09:49. Available at: http://www.acronymgeek.com/FOC. Accessed February 14, 2012, 09:49. |