| APA | PASO. (2012, February 16). In Acronym Geek. Retrieved 06:37, February 16, 2012, from http://www.acronymgeek.com/PASO |
| MLA | "PASO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/PASO>. |
| MHRA | 'PASO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/PASO> [accessed 16 February 2012] |
| Chicago | "PASO", http://www.acronymgeek.com/PASO (accessed February 16, 2012). |
| CBE/CSE | PASO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/PASO. |
| Bluebook | PASO, http://www.acronymgeek.com/PASO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, PASO, http://www.acronymgeek.com/PASO (optional description here) (as of Feb. 16, 2012, 06:37). |
| AMA | PASO. Acronym Geek. February 16, 2012, 06:37. Available at: http://www.acronymgeek.com/PASO. Accessed February 16, 2012, 06:37. |