| APA | PRB. (2012, February 15). In Acronym Geek. Retrieved 03:49, February 15, 2012, from http://www.acronymgeek.com/PRB |
| MLA | "PRB." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/PRB>. |
| MHRA | 'PRB', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/PRB> [accessed 15 February 2012] |
| Chicago | "PRB", http://www.acronymgeek.com/PRB (accessed February 15, 2012). |
| CBE/CSE | PRB [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/PRB. |
| Bluebook | PRB, http://www.acronymgeek.com/PRB (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PRB, http://www.acronymgeek.com/PRB (optional description here) (as of Feb. 15, 2012, 03:49). |
| AMA | PRB. Acronym Geek. February 15, 2012, 03:49. Available at: http://www.acronymgeek.com/PRB. Accessed February 15, 2012, 03:49. |