| APA | 4H-. (2012, February 12). In Acronym Geek. Retrieved 06:59, February 12, 2012, from http://www.acronymgeek.com/4H- |
| MLA | "4H-." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/4H->. |
| MHRA | '4H-', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/4H-> [accessed 12 February 2012] |
| Chicago | "4H-", http://www.acronymgeek.com/4H- (accessed February 12, 2012). |
| CBE/CSE | 4H- [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/4H-. |
| Bluebook | 4H-, http://www.acronymgeek.com/4H- (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4H-, http://www.acronymgeek.com/4H- (optional description here) (as of Feb. 12, 2012, 06:59). |
| AMA | 4H-. Acronym Geek. February 12, 2012, 06:59. Available at: http://www.acronymgeek.com/4H-. Accessed February 12, 2012, 06:59. |