| APA | HYL. (2012, February 14). In Acronym Geek. Retrieved 07:38, February 14, 2012, from http://www.acronymgeek.com/HYL |
| MLA | "HYL." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HYL>. |
| MHRA | 'HYL', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HYL> [accessed 14 February 2012] |
| Chicago | "HYL", http://www.acronymgeek.com/HYL (accessed February 14, 2012). |
| CBE/CSE | HYL [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HYL. |
| Bluebook | HYL, http://www.acronymgeek.com/HYL (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HYL, http://www.acronymgeek.com/HYL (optional description here) (as of Feb. 14, 2012, 07:38). |
| AMA | HYL. Acronym Geek. February 14, 2012, 07:38. Available at: http://www.acronymgeek.com/HYL. Accessed February 14, 2012, 07:38. |