| APA | DHPY. (2012, February 16). In Acronym Geek. Retrieved 05:37, February 16, 2012, from http://www.acronymgeek.com/DHPY |
| MLA | "DHPY." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/DHPY>. |
| MHRA | 'DHPY', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/DHPY> [accessed 16 February 2012] |
| Chicago | "DHPY", http://www.acronymgeek.com/DHPY (accessed February 16, 2012). |
| CBE/CSE | DHPY [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/DHPY. |
| Bluebook | DHPY, http://www.acronymgeek.com/DHPY (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DHPY, http://www.acronymgeek.com/DHPY (optional description here) (as of Feb. 16, 2012, 05:37). |
| AMA | DHPY. Acronym Geek. February 16, 2012, 05:37. Available at: http://www.acronymgeek.com/DHPY. Accessed February 16, 2012, 05:37. |