| APA | CARLE. (2012, February 12). In Acronym Geek. Retrieved 12:33, February 12, 2012, from http://www.acronymgeek.com/CARLE |
| MLA | "CARLE." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/CARLE>. |
| MHRA | 'CARLE', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/CARLE> [accessed 12 February 2012] |
| Chicago | "CARLE", http://www.acronymgeek.com/CARLE (accessed February 12, 2012). |
| CBE/CSE | CARLE [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/CARLE. |
| Bluebook | CARLE, http://www.acronymgeek.com/CARLE (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, CARLE, http://www.acronymgeek.com/CARLE (optional description here) (as of Feb. 12, 2012, 12:33). |
| AMA | CARLE. Acronym Geek. February 12, 2012, 12:33. Available at: http://www.acronymgeek.com/CARLE. Accessed February 12, 2012, 12:33. |