| APA | PO-213. (2012, February 12). In Acronym Geek. Retrieved 13:08, February 12, 2012, from http://www.acronymgeek.com/PO-213 |
| MLA | "PO-213." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/PO-213>. |
| MHRA | 'PO-213', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/PO-213> [accessed 12 February 2012] |
| Chicago | "PO-213", http://www.acronymgeek.com/PO-213 (accessed February 12, 2012). |
| CBE/CSE | PO-213 [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/PO-213. |
| Bluebook | PO-213, http://www.acronymgeek.com/PO-213 (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PO-213, http://www.acronymgeek.com/PO-213 (optional description here) (as of Feb. 12, 2012, 13:08). |
| AMA | PO-213. Acronym Geek. February 12, 2012, 13:08. Available at: http://www.acronymgeek.com/PO-213. Accessed February 12, 2012, 13:08. |