| APA | HAYP. (2012, February 16). In Acronym Geek. Retrieved 10:24, February 16, 2012, from http://www.acronymgeek.com/HAYP |
| MLA | "HAYP." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HAYP>. |
| MHRA | 'HAYP', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HAYP> [accessed 16 February 2012] |
| Chicago | "HAYP", http://www.acronymgeek.com/HAYP (accessed February 16, 2012). |
| CBE/CSE | HAYP [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HAYP. |
| Bluebook | HAYP, http://www.acronymgeek.com/HAYP (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HAYP, http://www.acronymgeek.com/HAYP (optional description here) (as of Feb. 16, 2012, 10:24). |
| AMA | HAYP. Acronym Geek. February 16, 2012, 10:24. Available at: http://www.acronymgeek.com/HAYP. Accessed February 16, 2012, 10:24. |