| APA | HOAL. (2012, February 16). In Acronym Geek. Retrieved 20:26, February 16, 2012, from http://www.acronymgeek.com/HOAL |
| MLA | "HOAL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HOAL>. |
| MHRA | 'HOAL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HOAL> [accessed 16 February 2012] |
| Chicago | "HOAL", http://www.acronymgeek.com/HOAL (accessed February 16, 2012). |
| CBE/CSE | HOAL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HOAL. |
| Bluebook | HOAL, http://www.acronymgeek.com/HOAL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HOAL, http://www.acronymgeek.com/HOAL (optional description here) (as of Feb. 16, 2012, 20:26). |
| AMA | HOAL. Acronym Geek. February 16, 2012, 20:26. Available at: http://www.acronymgeek.com/HOAL. Accessed February 16, 2012, 20:26. |