| Style | Reference Text |
|---|
| APA | PTR. (2012, May 27). In All Acronyms. Retrieved 03:23, May 27, 2012, from http://www.all-acronyms.com/PTR |
| MLA | "PTR." All Acronyms. 27 May 2012, 03:23. All Acronyms. 27 May 2012 <http://www.all-acronyms.com/PTR>. |
| MHRA | 'PTR', All Acronyms, 27 May 2012, 03:23, <http://www.all-acronyms.com/PTR> [accessed 27 May 2012] |
| Chicago | "PTR," http://www.all-acronyms.com/PTR (accessed May 27, 2012). |
| CBE/CSE | PTR [Internet]. All Acronyms; 2012 May 27, 03:23 [cited 2012 May 27]. Available from: http://www.all-acronyms.com/PTR. |
| Bluebook | PTR, http://www.all-acronyms.com/PTR (last visited May 27, 2012). |
| Bluebook: Harvard JOLT | See All Acronyms, PTR, http://www.all-acronyms.com/PTR (optional description here) (as of May. 27, 2012, 03:23). |
| AMA | PTR. All Acronyms. May 27, 2012, 03:23. Available at: http://www.all-acronyms.com/PTR. Accessed May 27, 2012. |
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