| APA | HYAF. (2012, February 17). In Acronym Geek. Retrieved 02:44, February 17, 2012, from http://www.acronymgeek.com/HYAF |
| MLA | "HYAF." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/HYAF>. |
| MHRA | 'HYAF', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/HYAF> [accessed 17 February 2012] |
| Chicago | "HYAF", http://www.acronymgeek.com/HYAF (accessed February 17, 2012). |
| CBE/CSE | HYAF [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/HYAF. |
| Bluebook | HYAF, http://www.acronymgeek.com/HYAF (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HYAF, http://www.acronymgeek.com/HYAF (optional description here) (as of Feb. 17, 2012, 02:44). |
| AMA | HYAF. Acronym Geek. February 17, 2012, 02:44. Available at: http://www.acronymgeek.com/HYAF. Accessed February 17, 2012, 02:44. |