| Style | Reference Text |
|---|
| APA | PTB. (2013, May 19). In All Acronyms. Retrieved 22:34, May 19, 2013, from http://www.all-acronyms.com/cat/1/PTB |
| MLA | "PTB." All Acronyms. 19 May 2013, 22:34. All Acronyms. 19 May 2013 <http://www.all-acronyms.com/cat/1/PTB>. |
| MHRA | 'PTB', All Acronyms, 19 May 2013, 22:34, <http://www.all-acronyms.com/cat/1/PTB> [accessed 19 May 2013] |
| Chicago | "PTB," http://www.all-acronyms.com/cat/1/PTB (accessed May 19, 2013). |
| CBE/CSE | PTB [Internet]. All Acronyms; 2013 May 19, 22:34 [cited 2013 May 19]. Available from: http://www.all-acronyms.com/cat/1/PTB. |
| Bluebook | PTB, http://www.all-acronyms.com/cat/1/PTB (last visited May 19, 2013). |
| Bluebook: Harvard JOLT | See All Acronyms, PTB, http://www.all-acronyms.com/cat/1/PTB (optional description here) (as of May. 19, 2013, 22:34). |
| AMA | PTB. All Acronyms. May 19, 2013, 22:34. Available at: http://www.all-acronyms.com/cat/1/PTB. Accessed May 19, 2013. |
Physikalisch-Technische Bundesamstalt