| APA | POSA. (2012, February 16). In Acronym Geek. Retrieved 15:51, February 16, 2012, from http://www.acronymgeek.com/POSA |
| MLA | "POSA." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/POSA>. |
| MHRA | 'POSA', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/POSA> [accessed 16 February 2012] |
| Chicago | "POSA", http://www.acronymgeek.com/POSA (accessed February 16, 2012). |
| CBE/CSE | POSA [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/POSA. |
| Bluebook | POSA, http://www.acronymgeek.com/POSA (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, POSA, http://www.acronymgeek.com/POSA (optional description here) (as of Feb. 16, 2012, 15:51). |
| AMA | POSA. Acronym Geek. February 16, 2012, 15:51. Available at: http://www.acronymgeek.com/POSA. Accessed February 16, 2012, 15:51. |