| APA | OPVQ. (2012, February 14). In Acronym Geek. Retrieved 15:46, February 14, 2012, from http://www.acronymgeek.com/OPVQ |
| MLA | "OPVQ." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OPVQ>. |
| MHRA | 'OPVQ', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OPVQ> [accessed 14 February 2012] |
| Chicago | "OPVQ", http://www.acronymgeek.com/OPVQ (accessed February 14, 2012). |
| CBE/CSE | OPVQ [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OPVQ. |
| Bluebook | OPVQ, http://www.acronymgeek.com/OPVQ (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OPVQ, http://www.acronymgeek.com/OPVQ (optional description here) (as of Feb. 14, 2012, 15:46). |
| AMA | OPVQ. Acronym Geek. February 14, 2012, 15:46. Available at: http://www.acronymgeek.com/OPVQ. Accessed February 14, 2012, 15:46. |