| APA | 4AP. (2012, February 10). In Acronym Geek. Retrieved 09:44, February 10, 2012, from http://www.acronymgeek.com/4AP |
| MLA | "4AP." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/4AP>. |
| MHRA | '4AP', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/4AP> [accessed 10 February 2012] |
| Chicago | "4AP", http://www.acronymgeek.com/4AP (accessed February 10, 2012). |
| CBE/CSE | 4AP [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/4AP. |
| Bluebook | 4AP, http://www.acronymgeek.com/4AP (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4AP, http://www.acronymgeek.com/4AP (optional description here) (as of Feb. 10, 2012, 09:44). |
| AMA | 4AP. Acronym Geek. February 10, 2012, 09:44. Available at: http://www.acronymgeek.com/4AP. Accessed February 10, 2012, 09:44. |