| APA | PIBO. (2012, February 15). In Acronym Geek. Retrieved 06:27, February 15, 2012, from http://www.acronymgeek.com/PIBO |
| MLA | "PIBO." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PIBO>. |
| MHRA | 'PIBO', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PIBO> [accessed 15 February 2012] |
| Chicago | "PIBO", http://www.acronymgeek.com/PIBO (accessed February 15, 2012). |
| CBE/CSE | PIBO [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PIBO. |
| Bluebook | PIBO, http://www.acronymgeek.com/PIBO (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PIBO, http://www.acronymgeek.com/PIBO (optional description here) (as of Feb. 15, 2012, 06:27). |
| AMA | PIBO. Acronym Geek. February 15, 2012, 06:27. Available at: http://www.acronymgeek.com/PIBO. Accessed February 15, 2012, 06:27. |