| APA | DNPI. (2012, February 15). In Acronym Geek. Retrieved 18:35, February 15, 2012, from http://www.acronymgeek.com/DNPI |
| MLA | "DNPI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DNPI>. |
| MHRA | 'DNPI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DNPI> [accessed 15 February 2012] |
| Chicago | "DNPI", http://www.acronymgeek.com/DNPI (accessed February 15, 2012). |
| CBE/CSE | DNPI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DNPI. |
| Bluebook | DNPI, http://www.acronymgeek.com/DNPI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DNPI, http://www.acronymgeek.com/DNPI (optional description here) (as of Feb. 15, 2012, 18:35). |
| AMA | DNPI. Acronym Geek. February 15, 2012, 18:35. Available at: http://www.acronymgeek.com/DNPI. Accessed February 15, 2012, 18:35. |