| APA | HFDG. (2012, February 16). In Acronym Geek. Retrieved 04:53, February 16, 2012, from http://www.acronymgeek.com/HFDG |
| MLA | "HFDG." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HFDG>. |
| MHRA | 'HFDG', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HFDG> [accessed 16 February 2012] |
| Chicago | "HFDG", http://www.acronymgeek.com/HFDG (accessed February 16, 2012). |
| CBE/CSE | HFDG [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HFDG. |
| Bluebook | HFDG, http://www.acronymgeek.com/HFDG (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HFDG, http://www.acronymgeek.com/HFDG (optional description here) (as of Feb. 16, 2012, 04:53). |
| AMA | HFDG. Acronym Geek. February 16, 2012, 04:53. Available at: http://www.acronymgeek.com/HFDG. Accessed February 16, 2012, 04:53. |