| APA | HHF'S. (2012, February 14). In Acronym Geek. Retrieved 03:40, February 14, 2012, from http://www.acronymgeek.com/HHF'S |
| MLA | "HHF'S." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HHF'S>. |
| MHRA | 'HHF'S', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HHF'S> [accessed 14 February 2012] |
| Chicago | "HHF'S", http://www.acronymgeek.com/HHF'S (accessed February 14, 2012). |
| CBE/CSE | HHF'S [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HHF'S. |
| Bluebook | HHF'S, http://www.acronymgeek.com/HHF'S (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HHF'S, http://www.acronymgeek.com/HHF'S (optional description here) (as of Feb. 14, 2012, 03:40). |
| AMA | HHF'S. Acronym Geek. February 14, 2012, 03:40. Available at: http://www.acronymgeek.com/HHF'S. Accessed February 14, 2012, 03:40. |