| APA | ABOP. (2012, February 10). In Acronym Geek. Retrieved 13:00, February 10, 2012, from http://www.acronymgeek.com/ABOP |
| MLA | "ABOP." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/ABOP>. |
| MHRA | 'ABOP', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/ABOP> [accessed 10 February 2012] |
| Chicago | "ABOP", http://www.acronymgeek.com/ABOP (accessed February 10, 2012). |
| CBE/CSE | ABOP [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/ABOP. |
| Bluebook | ABOP, http://www.acronymgeek.com/ABOP (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ABOP, http://www.acronymgeek.com/ABOP (optional description here) (as of Feb. 10, 2012, 13:00). |
| AMA | ABOP. Acronym Geek. February 10, 2012, 13:00. Available at: http://www.acronymgeek.com/ABOP. Accessed February 10, 2012, 13:00. |