| APA | CHYO. (2012, February 14). In Acronym Geek. Retrieved 17:26, February 14, 2012, from http://www.acronymgeek.com/CHYO |
| MLA | "CHYO." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/CHYO>. |
| MHRA | 'CHYO', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/CHYO> [accessed 14 February 2012] |
| Chicago | "CHYO", http://www.acronymgeek.com/CHYO (accessed February 14, 2012). |
| CBE/CSE | CHYO [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/CHYO. |
| Bluebook | CHYO, http://www.acronymgeek.com/CHYO (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CHYO, http://www.acronymgeek.com/CHYO (optional description here) (as of Feb. 14, 2012, 17:26). |
| AMA | CHYO. Acronym Geek. February 14, 2012, 17:26. Available at: http://www.acronymgeek.com/CHYO. Accessed February 14, 2012, 17:26. |