| APA | 4-WD. (2012, February 12). In Acronym Geek. Retrieved 12:42, February 12, 2012, from http://www.acronymgeek.com/4-WD |
| MLA | "4-WD." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/4-WD>. |
| MHRA | '4-WD', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/4-WD> [accessed 12 February 2012] |
| Chicago | "4-WD", http://www.acronymgeek.com/4-WD (accessed February 12, 2012). |
| CBE/CSE | 4-WD [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/4-WD. |
| Bluebook | 4-WD, http://www.acronymgeek.com/4-WD (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4-WD, http://www.acronymgeek.com/4-WD (optional description here) (as of Feb. 12, 2012, 12:42). |
| AMA | 4-WD. Acronym Geek. February 12, 2012, 12:42. Available at: http://www.acronymgeek.com/4-WD. Accessed February 12, 2012, 12:42. |