| APA | PUDI. (2012, February 11). In Acronym Geek. Retrieved 20:18, February 11, 2012, from http://www.acronymgeek.com/PUDI |
| MLA | "PUDI." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/PUDI>. |
| MHRA | 'PUDI', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/PUDI> [accessed 11 February 2012] |
| Chicago | "PUDI", http://www.acronymgeek.com/PUDI (accessed February 11, 2012). |
| CBE/CSE | PUDI [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/PUDI. |
| Bluebook | PUDI, http://www.acronymgeek.com/PUDI (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PUDI, http://www.acronymgeek.com/PUDI (optional description here) (as of Feb. 11, 2012, 20:18). |
| AMA | PUDI. Acronym Geek. February 11, 2012, 20:18. Available at: http://www.acronymgeek.com/PUDI. Accessed February 11, 2012, 20:18. |