| APA | HYAL. (2012, February 15). In Acronym Geek. Retrieved 04:53, February 15, 2012, from http://www.acronymgeek.com/HYAL |
| MLA | "HYAL." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HYAL>. |
| MHRA | 'HYAL', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HYAL> [accessed 15 February 2012] |
| Chicago | "HYAL", http://www.acronymgeek.com/HYAL (accessed February 15, 2012). |
| CBE/CSE | HYAL [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HYAL. |
| Bluebook | HYAL, http://www.acronymgeek.com/HYAL (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HYAL, http://www.acronymgeek.com/HYAL (optional description here) (as of Feb. 15, 2012, 04:53). |
| AMA | HYAL. Acronym Geek. February 15, 2012, 04:53. Available at: http://www.acronymgeek.com/HYAL. Accessed February 15, 2012, 04:53. |