| APA | HRTD. (2012, February 17). In Acronym Geek. Retrieved 03:48, February 17, 2012, from http://www.acronymgeek.com/HRTD |
| MLA | "HRTD." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/HRTD>. |
| MHRA | 'HRTD', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/HRTD> [accessed 17 February 2012] |
| Chicago | "HRTD", http://www.acronymgeek.com/HRTD (accessed February 17, 2012). |
| CBE/CSE | HRTD [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/HRTD. |
| Bluebook | HRTD, http://www.acronymgeek.com/HRTD (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HRTD, http://www.acronymgeek.com/HRTD (optional description here) (as of Feb. 17, 2012, 03:48). |
| AMA | HRTD. Acronym Geek. February 17, 2012, 03:48. Available at: http://www.acronymgeek.com/HRTD. Accessed February 17, 2012, 03:48. |