| APA | OTPB. (2012, February 14). In Acronym Geek. Retrieved 21:16, February 14, 2012, from http://www.acronymgeek.com/OTPB |
| MLA | "OTPB." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/OTPB>. |
| MHRA | 'OTPB', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/OTPB> [accessed 14 February 2012] |
| Chicago | "OTPB", http://www.acronymgeek.com/OTPB (accessed February 14, 2012). |
| CBE/CSE | OTPB [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/OTPB. |
| Bluebook | OTPB, http://www.acronymgeek.com/OTPB (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OTPB, http://www.acronymgeek.com/OTPB (optional description here) (as of Feb. 14, 2012, 21:16). |
| AMA | OTPB. Acronym Geek. February 14, 2012, 21:16. Available at: http://www.acronymgeek.com/OTPB. Accessed February 14, 2012, 21:16. |