| APA | OHDL. (2012, February 16). In Acronym Geek. Retrieved 20:00, February 16, 2012, from http://www.acronymgeek.com/OHDL |
| MLA | "OHDL." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/OHDL>. |
| MHRA | 'OHDL', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/OHDL> [accessed 16 February 2012] |
| Chicago | "OHDL", http://www.acronymgeek.com/OHDL (accessed February 16, 2012). |
| CBE/CSE | OHDL [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/OHDL. |
| Bluebook | OHDL, http://www.acronymgeek.com/OHDL (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, OHDL, http://www.acronymgeek.com/OHDL (optional description here) (as of Feb. 16, 2012, 20:00). |
| AMA | OHDL. Acronym Geek. February 16, 2012, 20:00. Available at: http://www.acronymgeek.com/OHDL. Accessed February 16, 2012, 20:00. |