| APA | HARK. (2012, February 15). In Acronym Geek. Retrieved 01:44, February 15, 2012, from http://www.acronymgeek.com/HARK |
| MLA | "HARK." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/HARK>. |
| MHRA | 'HARK', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/HARK> [accessed 15 February 2012] |
| Chicago | "HARK", http://www.acronymgeek.com/HARK (accessed February 15, 2012). |
| CBE/CSE | HARK [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/HARK. |
| Bluebook | HARK, http://www.acronymgeek.com/HARK (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HARK, http://www.acronymgeek.com/HARK (optional description here) (as of Feb. 15, 2012, 01:44). |
| AMA | HARK. Acronym Geek. February 15, 2012, 01:44. Available at: http://www.acronymgeek.com/HARK. Accessed February 15, 2012, 01:44. |