| APA | POSM. (2012, February 15). In Acronym Geek. Retrieved 06:19, February 15, 2012, from http://www.acronymgeek.com/POSM |
| MLA | "POSM." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/POSM>. |
| MHRA | 'POSM', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/POSM> [accessed 15 February 2012] |
| Chicago | "POSM", http://www.acronymgeek.com/POSM (accessed February 15, 2012). |
| CBE/CSE | POSM [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/POSM. |
| Bluebook | POSM, http://www.acronymgeek.com/POSM (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, POSM, http://www.acronymgeek.com/POSM (optional description here) (as of Feb. 15, 2012, 06:19). |
| AMA | POSM. Acronym Geek. February 15, 2012, 06:19. Available at: http://www.acronymgeek.com/POSM. Accessed February 15, 2012, 06:19. |