| APA | ROPH. (2012, February 14). In Acronym Geek. Retrieved 12:24, February 14, 2012, from http://www.acronymgeek.com/ROPH |
| MLA | "ROPH." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ROPH>. |
| MHRA | 'ROPH', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ROPH> [accessed 14 February 2012] |
| Chicago | "ROPH", http://www.acronymgeek.com/ROPH (accessed February 14, 2012). |
| CBE/CSE | ROPH [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ROPH. |
| Bluebook | ROPH, http://www.acronymgeek.com/ROPH (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ROPH, http://www.acronymgeek.com/ROPH (optional description here) (as of Feb. 14, 2012, 12:24). |
| AMA | ROPH. Acronym Geek. February 14, 2012, 12:24. Available at: http://www.acronymgeek.com/ROPH. Accessed February 14, 2012, 12:24. |