| APA | RA-219. (2012, February 12). In Acronym Geek. Retrieved 08:36, February 12, 2012, from http://www.acronymgeek.com/RA-219 |
| MLA | "RA-219." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/RA-219>. |
| MHRA | 'RA-219', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/RA-219> [accessed 12 February 2012] |
| Chicago | "RA-219", http://www.acronymgeek.com/RA-219 (accessed February 12, 2012). |
| CBE/CSE | RA-219 [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/RA-219. |
| Bluebook | RA-219, http://www.acronymgeek.com/RA-219 (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, RA-219, http://www.acronymgeek.com/RA-219 (optional description here) (as of Feb. 12, 2012, 08:36). |
| AMA | RA-219. Acronym Geek. February 12, 2012, 08:36. Available at: http://www.acronymgeek.com/RA-219. Accessed February 12, 2012, 08:36. |