| APA | ERHS. (2012, February 16). In Acronym Geek. Retrieved 19:52, February 16, 2012, from http://www.acronymgeek.com/ERHS |
| MLA | "ERHS." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/ERHS>. |
| MHRA | 'ERHS', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/ERHS> [accessed 16 February 2012] |
| Chicago | "ERHS", http://www.acronymgeek.com/ERHS (accessed February 16, 2012). |
| CBE/CSE | ERHS [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/ERHS. |
| Bluebook | ERHS, http://www.acronymgeek.com/ERHS (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ERHS, http://www.acronymgeek.com/ERHS (optional description here) (as of Feb. 16, 2012, 19:52). |
| AMA | ERHS. Acronym Geek. February 16, 2012, 19:52. Available at: http://www.acronymgeek.com/ERHS. Accessed February 16, 2012, 19:52. |