| APA | EHWI. (2012, February 15). In Acronym Geek. Retrieved 10:57, February 15, 2012, from http://www.acronymgeek.com/EHWI |
| MLA | "EHWI." Acronym Geek. (2012). Acronym Geek. 15 Feb 2012 <http://www.acronymgeek.com/EHWI>. |
| MHRA | 'EHWI', Acronym Geek, 15 February 2012, <http://www.acronymgeek.com/EHWI> [accessed 15 February 2012] |
| Chicago | "EHWI", http://www.acronymgeek.com/EHWI (accessed February 15, 2012). |
| CBE/CSE | EHWI [Internet]. Acronym Geek; 2012 Feb 15 [cited 2012 Feb 15]. Available from: http://www.acronymgeek.com/EHWI. |
| Bluebook | EHWI, http://www.acronymgeek.com/EHWI (last visited February 15, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EHWI, http://www.acronymgeek.com/EHWI (optional description here) (as of Feb. 15, 2012, 10:57). |
| AMA | EHWI. Acronym Geek. February 15, 2012, 10:57. Available at: http://www.acronymgeek.com/EHWI. Accessed February 15, 2012, 10:57. |