| Style | Reference Text |
|---|
| APA | OPK. (2009, November 30). In All Acronyms. Retrieved 20:24, November 30, 2009, from http://www.all-acronyms.com/OPK |
| MLA | "OPK." All Acronyms. 30 Nov 2009, 20:24. All Acronyms. 30 Nov 2009 <http://www.all-acronyms.com/OPK>. |
| MHRA | 'OPK', All Acronyms, 30 November 2009, 20:24, <http://www.all-acronyms.com/OPK> [accessed 30 November 2009] |
| Chicago | "OPK," http://www.all-acronyms.com/OPK (accessed November 30, 2009). |
| CBE/CSE | OPK [Internet]. All Acronyms; 2009 Nov 30, 20:24 [cited 2009 Nov 30]. Available from: http://www.all-acronyms.com/OPK. |
| Bluebook | OPK, http://www.all-acronyms.com/OPK (last visited November 30, 2009). |
| Bluebook: Harvard JOLT | See All Acronyms, OPK, http://www.all-acronyms.com/OPK (optional description here) (as of Nov. 30, 2009, 20:24). |
| AMA | OPK. All Acronyms. November 30, 2009, 20:24. Available at: http://www.all-acronyms.com/OPK. Accessed November 30, 2009. |
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