| APA | ROPB. (2012, February 17). In Acronym Geek. Retrieved 02:22, February 17, 2012, from http://www.acronymgeek.com/ROPB |
| MLA | "ROPB." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/ROPB>. |
| MHRA | 'ROPB', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/ROPB> [accessed 17 February 2012] |
| Chicago | "ROPB", http://www.acronymgeek.com/ROPB (accessed February 17, 2012). |
| CBE/CSE | ROPB [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/ROPB. |
| Bluebook | ROPB, http://www.acronymgeek.com/ROPB (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ROPB, http://www.acronymgeek.com/ROPB (optional description here) (as of Feb. 17, 2012, 02:22). |
| AMA | ROPB. Acronym Geek. February 17, 2012, 02:22. Available at: http://www.acronymgeek.com/ROPB. Accessed February 17, 2012, 02:22. |