| APA | PIDO. (2012, February 16). In Acronym Geek. Retrieved 05:59, February 16, 2012, from http://www.acronymgeek.com/PIDO |
| MLA | "PIDO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PIDO>. |
| MHRA | 'PIDO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PIDO> [accessed 16 February 2012] |
| Chicago | "PIDO", http://www.acronymgeek.com/PIDO (accessed February 16, 2012). |
| CBE/CSE | PIDO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PIDO. |
| Bluebook | PIDO, http://www.acronymgeek.com/PIDO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PIDO, http://www.acronymgeek.com/PIDO (optional description here) (as of Feb. 16, 2012, 05:59). |
| AMA | PIDO. Acronym Geek. February 16, 2012, 05:59. Available at: http://www.acronymgeek.com/PIDO. Accessed February 16, 2012, 05:59. |