| APA | ERHW. (2012, February 14). In Acronym Geek. Retrieved 18:24, February 14, 2012, from http://www.acronymgeek.com/ERHW |
| MLA | "ERHW." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/ERHW>. |
| MHRA | 'ERHW', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/ERHW> [accessed 14 February 2012] |
| Chicago | "ERHW", http://www.acronymgeek.com/ERHW (accessed February 14, 2012). |
| CBE/CSE | ERHW [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/ERHW. |
| Bluebook | ERHW, http://www.acronymgeek.com/ERHW (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, ERHW, http://www.acronymgeek.com/ERHW (optional description here) (as of Feb. 14, 2012, 18:24). |
| AMA | ERHW. Acronym Geek. February 14, 2012, 18:24. Available at: http://www.acronymgeek.com/ERHW. Accessed February 14, 2012, 18:24. |