| APA | BPO. (2012, February 9). In Acronym Geek. Retrieved 02:55, February 9, 2012, from http://www.acronymgeek.com/BPO |
| MLA | "BPO." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/BPO>. |
| MHRA | 'BPO', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/BPO> [accessed 9 February 2012] |
| Chicago | "BPO", http://www.acronymgeek.com/BPO (accessed February 9, 2012). |
| CBE/CSE | BPO [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/BPO. |
| Bluebook | BPO, http://www.acronymgeek.com/BPO (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, BPO, http://www.acronymgeek.com/BPO (optional description here) (as of Feb. 9, 2012, 02:55). |
| AMA | BPO. Acronym Geek. February 9, 2012, 02:55. Available at: http://www.acronymgeek.com/BPO. Accessed February 9, 2012, 02:55. |