| Style | Reference Text |
|---|
| APA | PORTIS. (2009, November 27). In All Acronyms. Retrieved 11:01, November 27, 2009, from http://www.all-acronyms.com/cat/4/PORTIS |
| MLA | "PORTIS." All Acronyms. 27 Nov 2009, 11:01. All Acronyms. 27 Nov 2009 <http://www.all-acronyms.com/cat/4/PORTIS>. |
| MHRA | 'PORTIS', All Acronyms, 27 November 2009, 11:01, <http://www.all-acronyms.com/cat/4/PORTIS> [accessed 27 November 2009] |
| Chicago | "PORTIS," http://www.all-acronyms.com/cat/4/PORTIS (accessed November 27, 2009). |
| CBE/CSE | PORTIS [Internet]. All Acronyms; 2009 Nov 27, 11:01 [cited 2009 Nov 27]. Available from: http://www.all-acronyms.com/cat/4/PORTIS. |
| Bluebook | PORTIS, http://www.all-acronyms.com/cat/4/PORTIS (last visited November 27, 2009). |
| Bluebook: Harvard JOLT | See All Acronyms, PORTIS, http://www.all-acronyms.com/cat/4/PORTIS (optional description here) (as of Nov. 27, 2009, 11:01). |
| AMA | PORTIS. All Acronyms. November 27, 2009, 11:01. Available at: http://www.all-acronyms.com/cat/4/PORTIS. Accessed November 27, 2009. |
Portable Ticket Issuing System