| APA | HHYA. (2012, February 15). In Acronym Geek. Retrieved 21:11, February 15, 2012, from http://www.acronymgeek.com/HHYA |
| MLA | "HHYA." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HHYA>. |
| MHRA | 'HHYA', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HHYA> [accessed 15 February 2012] |
| Chicago | "HHYA", http://www.acronymgeek.com/HHYA (accessed February 15, 2012). |
| CBE/CSE | HHYA [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HHYA. |
| Bluebook | HHYA, http://www.acronymgeek.com/HHYA (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HHYA, http://www.acronymgeek.com/HHYA (optional description here) (as of Feb. 15, 2012, 21:11). |
| AMA | HHYA. Acronym Geek. February 15, 2012, 21:11. Available at: http://www.acronymgeek.com/HHYA. Accessed February 15, 2012, 21:11. |