| APA | 4MPY. (2012, February 12). In Acronym Geek. Retrieved 07:13, February 12, 2012, from http://www.acronymgeek.com/4MPY |
| MLA | "4MPY." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/4MPY>. |
| MHRA | '4MPY', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/4MPY> [accessed 12 February 2012] |
| Chicago | "4MPY", http://www.acronymgeek.com/4MPY (accessed February 12, 2012). |
| CBE/CSE | 4MPY [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/4MPY. |
| Bluebook | 4MPY, http://www.acronymgeek.com/4MPY (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4MPY, http://www.acronymgeek.com/4MPY (optional description here) (as of Feb. 12, 2012, 07:13). |
| AMA | 4MPY. Acronym Geek. February 12, 2012, 07:13. Available at: http://www.acronymgeek.com/4MPY. Accessed February 12, 2012, 07:13. |