| APA | HHYF. (2012, February 14). In Acronym Geek. Retrieved 14:03, February 14, 2012, from http://www.acronymgeek.com/HHYF |
| MLA | "HHYF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HHYF>. |
| MHRA | 'HHYF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HHYF> [accessed 14 February 2012] |
| Chicago | "HHYF", http://www.acronymgeek.com/HHYF (accessed February 14, 2012). |
| CBE/CSE | HHYF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HHYF. |
| Bluebook | HHYF, http://www.acronymgeek.com/HHYF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HHYF, http://www.acronymgeek.com/HHYF (optional description here) (as of Feb. 14, 2012, 14:03). |
| AMA | HHYF. Acronym Geek. February 14, 2012, 14:03. Available at: http://www.acronymgeek.com/HHYF. Accessed February 14, 2012, 14:03. |