| APA | EC50. (2012, February 10). In Acronym Geek. Retrieved 18:08, February 10, 2012, from http://www.acronymgeek.com/EC50 |
| MLA | "EC50." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/EC50>. |
| MHRA | 'EC50', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/EC50> [accessed 10 February 2012] |
| Chicago | "EC50", http://www.acronymgeek.com/EC50 (accessed February 10, 2012). |
| CBE/CSE | EC50 [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/EC50. |
| Bluebook | EC50, http://www.acronymgeek.com/EC50 (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, EC50, http://www.acronymgeek.com/EC50 (optional description here) (as of Feb. 10, 2012, 18:08). |
| AMA | EC50. Acronym Geek. February 10, 2012, 18:08. Available at: http://www.acronymgeek.com/EC50. Accessed February 10, 2012, 18:08. |