| APA | WHO. (2012, February 9). In Acronym Geek. Retrieved 17:20, February 9, 2012, from http://www.acronymgeek.com/WHO |
| MLA | "WHO." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/WHO>. |
| MHRA | 'WHO', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/WHO> [accessed 9 February 2012] |
| Chicago | "WHO", http://www.acronymgeek.com/WHO (accessed February 9, 2012). |
| CBE/CSE | WHO [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/WHO. |
| Bluebook | WHO, http://www.acronymgeek.com/WHO (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, WHO, http://www.acronymgeek.com/WHO (optional description here) (as of Feb. 9, 2012, 17:20). |
| AMA | WHO. Acronym Geek. February 9, 2012, 17:20. Available at: http://www.acronymgeek.com/WHO. Accessed February 9, 2012, 17:20. |