| APA | USD. (2012, February 4). In Acronym Geek. Retrieved 12:08, February 4, 2012, from http://www.acronymgeek.com/USD |
| MLA | "USD." Acronym Geek. (2012). Acronym Geek. 4 Feb 2012 <http://www.acronymgeek.com/USD>. |
| MHRA | 'USD', Acronym Geek, 4 February 2012, <http://www.acronymgeek.com/USD> [accessed 4 February 2012] |
| Chicago | "USD", http://www.acronymgeek.com/USD (accessed February 4, 2012). |
| CBE/CSE | USD [Internet]. Acronym Geek; 2012 Feb 4 [cited 2012 Feb 4]. Available from: http://www.acronymgeek.com/USD. |
| Bluebook | USD, http://www.acronymgeek.com/USD (last visited February 4, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, USD, http://www.acronymgeek.com/USD (optional description here) (as of Feb. 4, 2012, 12:08). |
| AMA | USD. Acronym Geek. February 4, 2012, 12:08. Available at: http://www.acronymgeek.com/USD. Accessed February 4, 2012, 12:08. |