| APA | E.T.. (2012, February 14). In Acronym Geek. Retrieved 20:25, February 14, 2012, from http://www.acronymgeek.com/E.T. |
| MLA | "E.T.." Acronym Geek. (2012). Acronym Geek. 14 Feb 2012 <http://www.acronymgeek.com/E.T.>. |
| MHRA | 'E.T.', Acronym Geek, 14 February 2012, <http://www.acronymgeek.com/E.T.> [accessed 14 February 2012] |
| Chicago | "E.T.", http://www.acronymgeek.com/E.T. (accessed February 14, 2012). |
| CBE/CSE | E.T. [Internet]. Acronym Geek; 2012 Feb 14 [cited 2012 Feb 14]. Available from: http://www.acronymgeek.com/E.T.. |
| Bluebook | E.T., http://www.acronymgeek.com/E.T. (last visited February 14, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, E.T., http://www.acronymgeek.com/E.T. (optional description here) (as of Feb. 14, 2012, 20:25). |
| AMA | E.T.. Acronym Geek. February 14, 2012, 20:25. Available at: http://www.acronymgeek.com/E.T.. Accessed February 14, 2012, 20:25. |