| APA | HRDE. (2012, February 15). In Acronym Geek. Retrieved 05:29, February 15, 2012, from http://www.acronymgeek.com/HRDE |
| MLA | "HRDE." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HRDE>. |
| MHRA | 'HRDE', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HRDE> [accessed 15 February 2012] |
| Chicago | "HRDE", http://www.acronymgeek.com/HRDE (accessed February 15, 2012). |
| CBE/CSE | HRDE [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HRDE. |
| Bluebook | HRDE, http://www.acronymgeek.com/HRDE (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HRDE, http://www.acronymgeek.com/HRDE (optional description here) (as of Feb. 15, 2012, 05:29). |
| AMA | HRDE. Acronym Geek. February 15, 2012, 05:29. Available at: http://www.acronymgeek.com/HRDE. Accessed February 15, 2012, 05:29. |