| APA | HDYG. (2012, February 16). In Acronym Geek. Retrieved 05:51, February 16, 2012, from http://www.acronymgeek.com/HDYG |
| MLA | "HDYG." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HDYG>. |
| MHRA | 'HDYG', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HDYG> [accessed 16 February 2012] |
| Chicago | "HDYG", http://www.acronymgeek.com/HDYG (accessed February 16, 2012). |
| CBE/CSE | HDYG [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HDYG. |
| Bluebook | HDYG, http://www.acronymgeek.com/HDYG (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HDYG, http://www.acronymgeek.com/HDYG (optional description here) (as of Feb. 16, 2012, 05:51). |
| AMA | HDYG. Acronym Geek. February 16, 2012, 05:51. Available at: http://www.acronymgeek.com/HDYG. Accessed February 16, 2012, 05:51. |