| APA | DE4L. (2012, February 15). In Acronym Geek. Retrieved 07:46, February 15, 2012, from http://www.acronymgeek.com/DE4L |
| MLA | "DE4L." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/DE4L>. |
| MHRA | 'DE4L', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/DE4L> [accessed 15 February 2012] |
| Chicago | "DE4L", http://www.acronymgeek.com/DE4L (accessed February 15, 2012). |
| CBE/CSE | DE4L [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/DE4L. |
| Bluebook | DE4L, http://www.acronymgeek.com/DE4L (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, DE4L, http://www.acronymgeek.com/DE4L (optional description here) (as of Feb. 15, 2012, 07:46). |
| AMA | DE4L. Acronym Geek. February 15, 2012, 07:46. Available at: http://www.acronymgeek.com/DE4L. Accessed February 15, 2012, 07:46. |