| APA | 993. (2012, February 10). In Acronym Geek. Retrieved 09:42, February 10, 2012, from http://www.acronymgeek.com/993 |
| MLA | "993." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/993>. |
| MHRA | '993', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/993> [accessed 10 February 2012] |
| Chicago | "993", http://www.acronymgeek.com/993 (accessed February 10, 2012). |
| CBE/CSE | 993 [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/993. |
| Bluebook | 993, http://www.acronymgeek.com/993 (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 993, http://www.acronymgeek.com/993 (optional description here) (as of Feb. 10, 2012, 09:42). |
| AMA | 993. Acronym Geek. February 10, 2012, 09:42. Available at: http://www.acronymgeek.com/993. Accessed February 10, 2012, 09:42. |