| APA | DDG. (2012, February 9). In Acronym Geek. Retrieved 19:27, February 9, 2012, from http://www.acronymgeek.com/DDG |
| MLA | "DDG." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/DDG>. |
| MHRA | 'DDG', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/DDG> [accessed 9 February 2012] |
| Chicago | "DDG", http://www.acronymgeek.com/DDG (accessed February 9, 2012). |
| CBE/CSE | DDG [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/DDG. |
| Bluebook | DDG, http://www.acronymgeek.com/DDG (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DDG, http://www.acronymgeek.com/DDG (optional description here) (as of Feb. 9, 2012, 19:27). |
| AMA | DDG. Acronym Geek. February 9, 2012, 19:27. Available at: http://www.acronymgeek.com/DDG. Accessed February 9, 2012, 19:27. |