| APA | PDOS. (2012, February 16). In Acronym Geek. Retrieved 09:45, February 16, 2012, from http://www.acronymgeek.com/PDOS |
| MLA | "PDOS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PDOS>. |
| MHRA | 'PDOS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PDOS> [accessed 16 February 2012] |
| Chicago | "PDOS", http://www.acronymgeek.com/PDOS (accessed February 16, 2012). |
| CBE/CSE | PDOS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PDOS. |
| Bluebook | PDOS, http://www.acronymgeek.com/PDOS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PDOS, http://www.acronymgeek.com/PDOS (optional description here) (as of Feb. 16, 2012, 09:45). |
| AMA | PDOS. Acronym Geek. February 16, 2012, 09:45. Available at: http://www.acronymgeek.com/PDOS. Accessed February 16, 2012, 09:45. |