| APA | COLH. (2012, February 16). In Acronym Geek. Retrieved 23:23, February 16, 2012, from http://www.acronymgeek.com/COLH |
| MLA | "COLH." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/COLH>. |
| MHRA | 'COLH', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/COLH> [accessed 16 February 2012] |
| Chicago | "COLH", http://www.acronymgeek.com/COLH (accessed February 16, 2012). |
| CBE/CSE | COLH [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/COLH. |
| Bluebook | COLH, http://www.acronymgeek.com/COLH (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, COLH, http://www.acronymgeek.com/COLH (optional description here) (as of Feb. 16, 2012, 23:23). |
| AMA | COLH. Acronym Geek. February 16, 2012, 23:23. Available at: http://www.acronymgeek.com/COLH. Accessed February 16, 2012, 23:23. |