| Style | Reference Text |
|---|
| APA | PORTIS. (2012, May 27). In All Acronyms. Retrieved 03:15, May 27, 2012, from http://www.all-acronyms.com/PORTIS |
| MLA | "PORTIS." All Acronyms. 27 May 2012, 03:15. All Acronyms. 27 May 2012 <http://www.all-acronyms.com/PORTIS>. |
| MHRA | 'PORTIS', All Acronyms, 27 May 2012, 03:15, <http://www.all-acronyms.com/PORTIS> [accessed 27 May 2012] |
| Chicago | "PORTIS," http://www.all-acronyms.com/PORTIS (accessed May 27, 2012). |
| CBE/CSE | PORTIS [Internet]. All Acronyms; 2012 May 27, 03:15 [cited 2012 May 27]. Available from: http://www.all-acronyms.com/PORTIS. |
| Bluebook | PORTIS, http://www.all-acronyms.com/PORTIS (last visited May 27, 2012). |
| Bluebook: Harvard JOLT | See All Acronyms, PORTIS, http://www.all-acronyms.com/PORTIS (optional description here) (as of May. 27, 2012, 03:15). |
| AMA | PORTIS. All Acronyms. May 27, 2012, 03:15. Available at: http://www.all-acronyms.com/PORTIS. Accessed May 27, 2012. |
Portable Ticket Issuing System