| APA | HAL. (2012, February 8). In Acronym Geek. Retrieved 11:28, February 8, 2012, from http://www.acronymgeek.com/HAL |
| MLA | "HAL." Acronym Geek. (2012). Acronym Geek. 8 Feb 2012 <http://www.acronymgeek.com/HAL>. |
| MHRA | 'HAL', Acronym Geek, 8 February 2012, <http://www.acronymgeek.com/HAL> [accessed 8 February 2012] |
| Chicago | "HAL", http://www.acronymgeek.com/HAL (accessed February 8, 2012). |
| CBE/CSE | HAL [Internet]. Acronym Geek; 2012 Feb 8 [cited 2012 Feb 8]. Available from: http://www.acronymgeek.com/HAL. |
| Bluebook | HAL, http://www.acronymgeek.com/HAL (last visited February 8, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAL, http://www.acronymgeek.com/HAL (optional description here) (as of Feb. 8, 2012, 11:28). |
| AMA | HAL. Acronym Geek. February 8, 2012, 11:28. Available at: http://www.acronymgeek.com/HAL. Accessed February 8, 2012, 11:28. |