| APA | 4-HYP. (2012, February 12). In Acronym Geek. Retrieved 15:23, February 12, 2012, from http://www.acronymgeek.com/4-HYP |
| MLA | "4-HYP." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/4-HYP>. |
| MHRA | '4-HYP', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/4-HYP> [accessed 12 February 2012] |
| Chicago | "4-HYP", http://www.acronymgeek.com/4-HYP (accessed February 12, 2012). |
| CBE/CSE | 4-HYP [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/4-HYP. |
| Bluebook | 4-HYP, http://www.acronymgeek.com/4-HYP (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4-HYP, http://www.acronymgeek.com/4-HYP (optional description here) (as of Feb. 12, 2012, 15:23). |
| AMA | 4-HYP. Acronym Geek. February 12, 2012, 15:23. Available at: http://www.acronymgeek.com/4-HYP. Accessed February 12, 2012, 15:23. |