| APA | HIYO. (2012, February 17). In Acronym Geek. Retrieved 01:06, February 17, 2012, from http://www.acronymgeek.com/HIYO |
| MLA | "HIYO." Acronym Geek. (2012). Acronym Geek. 17 Feb 2012 <http://www.acronymgeek.com/HIYO>. |
| MHRA | 'HIYO', Acronym Geek, 17 February 2012, <http://www.acronymgeek.com/HIYO> [accessed 17 February 2012] |
| Chicago | "HIYO", http://www.acronymgeek.com/HIYO (accessed February 17, 2012). |
| CBE/CSE | HIYO [Internet]. Acronym Geek; 2012 Feb 17 [cited 2012 Feb 17]. Available from: http://www.acronymgeek.com/HIYO. |
| Bluebook | HIYO, http://www.acronymgeek.com/HIYO (last visited February 17, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HIYO, http://www.acronymgeek.com/HIYO (optional description here) (as of Feb. 17, 2012, 01:06). |
| AMA | HIYO. Acronym Geek. February 17, 2012, 01:06. Available at: http://www.acronymgeek.com/HIYO. Accessed February 17, 2012, 01:06. |