| APA | HPAY. (2012, February 16). In Acronym Geek. Retrieved 03:45, February 16, 2012, from http://www.acronymgeek.com/HPAY |
| MLA | "HPAY." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HPAY>. |
| MHRA | 'HPAY', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HPAY> [accessed 16 February 2012] |
| Chicago | "HPAY", http://www.acronymgeek.com/HPAY (accessed February 16, 2012). |
| CBE/CSE | HPAY [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HPAY. |
| Bluebook | HPAY, http://www.acronymgeek.com/HPAY (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HPAY, http://www.acronymgeek.com/HPAY (optional description here) (as of Feb. 16, 2012, 03:45). |
| AMA | HPAY. Acronym Geek. February 16, 2012, 03:45. Available at: http://www.acronymgeek.com/HPAY. Accessed February 16, 2012, 03:45. |