| Style | Reference Text |
|---|
| APA | PORTIS. (2009, November 22). In All Acronyms. Retrieved 04:21, November 22, 2009, from http://www.all-acronyms.com/PORTIS |
| MLA | "PORTIS." All Acronyms. 22 Nov 2009, 04:21. All Acronyms. 22 Nov 2009 <http://www.all-acronyms.com/PORTIS>. |
| MHRA | 'PORTIS', All Acronyms, 22 November 2009, 04:21, <http://www.all-acronyms.com/PORTIS> [accessed 22 November 2009] |
| Chicago | "PORTIS," http://www.all-acronyms.com/PORTIS (accessed November 22, 2009). |
| CBE/CSE | PORTIS [Internet]. All Acronyms; 2009 Nov 22, 04:21 [cited 2009 Nov 22]. Available from: http://www.all-acronyms.com/PORTIS. |
| Bluebook | PORTIS, http://www.all-acronyms.com/PORTIS (last visited November 22, 2009). |
| Bluebook: Harvard JOLT | See All Acronyms, PORTIS, http://www.all-acronyms.com/PORTIS (optional description here) (as of Nov. 22, 2009, 04:21). |
| AMA | PORTIS. All Acronyms. November 22, 2009, 04:21. Available at: http://www.all-acronyms.com/PORTIS. Accessed November 22, 2009. |
Portable Ticket Issuing System