| APA | HHYC. (2012, February 16). In Acronym Geek. Retrieved 12:00, February 16, 2012, from http://www.acronymgeek.com/HHYC |
| MLA | "HHYC." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HHYC>. |
| MHRA | 'HHYC', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HHYC> [accessed 16 February 2012] |
| Chicago | "HHYC", http://www.acronymgeek.com/HHYC (accessed February 16, 2012). |
| CBE/CSE | HHYC [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HHYC. |
| Bluebook | HHYC, http://www.acronymgeek.com/HHYC (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HHYC, http://www.acronymgeek.com/HHYC (optional description here) (as of Feb. 16, 2012, 12:00). |
| AMA | HHYC. Acronym Geek. February 16, 2012, 12:00. Available at: http://www.acronymgeek.com/HHYC. Accessed February 16, 2012, 12:00. |