| APA | 4WAS. (2012, February 10). In Acronym Geek. Retrieved 12:06, February 10, 2012, from http://www.acronymgeek.com/4WAS |
| MLA | "4WAS." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/4WAS>. |
| MHRA | '4WAS', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/4WAS> [accessed 10 February 2012] |
| Chicago | "4WAS", http://www.acronymgeek.com/4WAS (accessed February 10, 2012). |
| CBE/CSE | 4WAS [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/4WAS. |
| Bluebook | 4WAS, http://www.acronymgeek.com/4WAS (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4WAS, http://www.acronymgeek.com/4WAS (optional description here) (as of Feb. 10, 2012, 12:06). |
| AMA | 4WAS. Acronym Geek. February 10, 2012, 12:06. Available at: http://www.acronymgeek.com/4WAS. Accessed February 10, 2012, 12:06. |