| APA | STD. (2012, February 15). In Acronym Geek. Retrieved 03:30, February 15, 2012, from http://www.acronymgeek.com/STD |
| MLA | "STD." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/STD>. |
| MHRA | 'STD', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/STD> [accessed 15 February 2012] |
| Chicago | "STD", http://www.acronymgeek.com/STD (accessed February 15, 2012). |
| CBE/CSE | STD [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/STD. |
| Bluebook | STD, http://www.acronymgeek.com/STD (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, STD, http://www.acronymgeek.com/STD (optional description here) (as of Feb. 15, 2012, 03:30). |
| AMA | STD. Acronym Geek. February 15, 2012, 03:30. Available at: http://www.acronymgeek.com/STD. Accessed February 15, 2012, 03:30. |