| APA | DPYF. (2012, February 14). In Acronym Geek. Retrieved 18:25, February 14, 2012, from http://www.acronymgeek.com/DPYF |
| MLA | "DPYF." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/DPYF>. |
| MHRA | 'DPYF', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/DPYF> [accessed 14 February 2012] |
| Chicago | "DPYF", http://www.acronymgeek.com/DPYF (accessed February 14, 2012). |
| CBE/CSE | DPYF [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/DPYF. |
| Bluebook | DPYF, http://www.acronymgeek.com/DPYF (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DPYF, http://www.acronymgeek.com/DPYF (optional description here) (as of Feb. 14, 2012, 18:25). |
| AMA | DPYF. Acronym Geek. February 14, 2012, 18:25. Available at: http://www.acronymgeek.com/DPYF. Accessed February 14, 2012, 18:25. |