| APA | P.M.. (2012, February 10). In Acronym Geek. Retrieved 17:32, February 10, 2012, from http://www.acronymgeek.com/P.M. |
| MLA | "P.M.." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/P.M.>. |
| MHRA | 'P.M.', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/P.M.> [accessed 10 February 2012] |
| Chicago | "P.M.", http://www.acronymgeek.com/P.M. (accessed February 10, 2012). |
| CBE/CSE | P.M. [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/P.M.. |
| Bluebook | P.M., http://www.acronymgeek.com/P.M. (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, P.M., http://www.acronymgeek.com/P.M. (optional description here) (as of Feb. 10, 2012, 17:32). |
| AMA | P.M.. Acronym Geek. February 10, 2012, 17:32. Available at: http://www.acronymgeek.com/P.M.. Accessed February 10, 2012, 17:32. |