| Style | Reference Text |
|---|
| APA | PO. (2009, November 9). In All Acronyms. Retrieved 03:10, November 9, 2009, from http://www.all-acronyms.com/cat/7/PO |
| MLA | "PO." All Acronyms. 9 Nov 2009, 03:10. All Acronyms. 9 Nov 2009 <http://www.all-acronyms.com/cat/7/PO>. |
| MHRA | 'PO', All Acronyms, 9 November 2009, 03:10, <http://www.all-acronyms.com/cat/7/PO> [accessed 9 November 2009] |
| Chicago | "PO," http://www.all-acronyms.com/cat/7/PO (accessed November 9, 2009). |
| CBE/CSE | PO [Internet]. All Acronyms; 2009 Nov 9, 03:10 [cited 2009 Nov 9]. Available from: http://www.all-acronyms.com/cat/7/PO. |
| Bluebook | PO, http://www.all-acronyms.com/cat/7/PO (last visited November 9, 2009). |
| Bluebook: Harvard JOLT | See All Acronyms, PO, http://www.all-acronyms.com/cat/7/PO (optional description here) (as of Nov. 9, 2009, 03:10). |
| AMA | PO. All Acronyms. November 9, 2009, 03:10. Available at: http://www.all-acronyms.com/cat/7/PO. Accessed November 9, 2009. |
by mouth