| APA | HRV. (2012, February 14). In Acronym Geek. Retrieved 06:40, February 14, 2012, from http://www.acronymgeek.com/HRV |
| MLA | "HRV." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/HRV>. |
| MHRA | 'HRV', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/HRV> [accessed 14 February 2012] |
| Chicago | "HRV", http://www.acronymgeek.com/HRV (accessed February 14, 2012). |
| CBE/CSE | HRV [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/HRV. |
| Bluebook | HRV, http://www.acronymgeek.com/HRV (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, HRV, http://www.acronymgeek.com/HRV (optional description here) (as of Feb. 14, 2012, 06:40). |
| AMA | HRV. Acronym Geek. February 14, 2012, 06:40. Available at: http://www.acronymgeek.com/HRV. Accessed February 14, 2012, 06:40. |