| Style | Reference Text |
|---|
| APA | DD. (2009, November 24). In All Acronyms. Retrieved 15:37, November 24, 2009, from http://www.all-acronyms.com/cat/4/DD |
| MLA | "DD." All Acronyms. 24 Nov 2009, 15:37. All Acronyms. 24 Nov 2009 <http://www.all-acronyms.com/cat/4/DD>. |
| MHRA | 'DD', All Acronyms, 24 November 2009, 15:37, <http://www.all-acronyms.com/cat/4/DD> [accessed 24 November 2009] |
| Chicago | "DD," http://www.all-acronyms.com/cat/4/DD (accessed November 24, 2009). |
| CBE/CSE | DD [Internet]. All Acronyms; 2009 Nov 24, 15:37 [cited 2009 Nov 24]. Available from: http://www.all-acronyms.com/cat/4/DD. |
| Bluebook | DD, http://www.all-acronyms.com/cat/4/DD (last visited November 24, 2009). |
| Bluebook: Harvard JOLT | See All Acronyms, DD, http://www.all-acronyms.com/cat/4/DD (optional description here) (as of Nov. 24, 2009, 15:37). |
| AMA | DD. All Acronyms. November 24, 2009, 15:37. Available at: http://www.all-acronyms.com/cat/4/DD. Accessed November 24, 2009. |
Directional Drilling