| APA | 99. (2012, February 11). In Acronym Geek. Retrieved 21:51, February 11, 2012, from http://www.acronymgeek.com/99 |
| MLA | "99." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/99>. |
| MHRA | '99', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/99> [accessed 11 February 2012] |
| Chicago | "99", http://www.acronymgeek.com/99 (accessed February 11, 2012). |
| CBE/CSE | 99 [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/99. |
| Bluebook | 99, http://www.acronymgeek.com/99 (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 99, http://www.acronymgeek.com/99 (optional description here) (as of Feb. 11, 2012, 21:51). |
| AMA | 99. Acronym Geek. February 11, 2012, 21:51. Available at: http://www.acronymgeek.com/99. Accessed February 11, 2012, 21:51. |