| APA | HLAY. (2012, February 15). In Acronym Geek. Retrieved 14:00, February 15, 2012, from http://www.acronymgeek.com/HLAY |
| MLA | "HLAY." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HLAY>. |
| MHRA | 'HLAY', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HLAY> [accessed 15 February 2012] |
| Chicago | "HLAY", http://www.acronymgeek.com/HLAY (accessed February 15, 2012). |
| CBE/CSE | HLAY [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HLAY. |
| Bluebook | HLAY, http://www.acronymgeek.com/HLAY (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HLAY, http://www.acronymgeek.com/HLAY (optional description here) (as of Feb. 15, 2012, 14:00). |
| AMA | HLAY. Acronym Geek. February 15, 2012, 14:00. Available at: http://www.acronymgeek.com/HLAY. Accessed February 15, 2012, 14:00. |