| APA | 1E. (2012, February 11). In Acronym Geek. Retrieved 21:51, February 11, 2012, from http://www.acronymgeek.com/1E |
| MLA | "1E." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/1E>. |
| MHRA | '1E', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/1E> [accessed 11 February 2012] |
| Chicago | "1E", http://www.acronymgeek.com/1E (accessed February 11, 2012). |
| CBE/CSE | 1E [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/1E. |
| Bluebook | 1E, http://www.acronymgeek.com/1E (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 1E, http://www.acronymgeek.com/1E (optional description here) (as of Feb. 11, 2012, 21:51). |
| AMA | 1E. Acronym Geek. February 11, 2012, 21:51. Available at: http://www.acronymgeek.com/1E. Accessed February 11, 2012, 21:51. |