| APA | HAPG. (2012, February 15). In Acronym Geek. Retrieved 22:54, February 15, 2012, from http://www.acronymgeek.com/HAPG |
| MLA | "HAPG." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HAPG>. |
| MHRA | 'HAPG', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HAPG> [accessed 15 February 2012] |
| Chicago | "HAPG", http://www.acronymgeek.com/HAPG (accessed February 15, 2012). |
| CBE/CSE | HAPG [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HAPG. |
| Bluebook | HAPG, http://www.acronymgeek.com/HAPG (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAPG, http://www.acronymgeek.com/HAPG (optional description here) (as of Feb. 15, 2012, 22:54). |
| AMA | HAPG. Acronym Geek. February 15, 2012, 22:54. Available at: http://www.acronymgeek.com/HAPG. Accessed February 15, 2012, 22:54. |