| APA | HCJO. (2012, February 16). In Acronym Geek. Retrieved 01:52, February 16, 2012, from http://www.acronymgeek.com/HCJO |
| MLA | "HCJO." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/HCJO>. |
| MHRA | 'HCJO', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/HCJO> [accessed 16 February 2012] |
| Chicago | "HCJO", http://www.acronymgeek.com/HCJO (accessed February 16, 2012). |
| CBE/CSE | HCJO [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/HCJO. |
| Bluebook | HCJO, http://www.acronymgeek.com/HCJO (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HCJO, http://www.acronymgeek.com/HCJO (optional description here) (as of Feb. 16, 2012, 01:52). |
| AMA | HCJO. Acronym Geek. February 16, 2012, 01:52. Available at: http://www.acronymgeek.com/HCJO. Accessed February 16, 2012, 01:52. |