| APA | 4PDT. (2012, February 11). In Acronym Geek. Retrieved 21:44, February 11, 2012, from http://www.acronymgeek.com/4PDT |
| MLA | "4PDT." Acronym Geek. (2012). Acronym Geek. 11 Feb 2012 <http://www.acronymgeek.com/4PDT>. |
| MHRA | '4PDT', Acronym Geek, 11 February 2012, <http://www.acronymgeek.com/4PDT> [accessed 11 February 2012] |
| Chicago | "4PDT", http://www.acronymgeek.com/4PDT (accessed February 11, 2012). |
| CBE/CSE | 4PDT [Internet]. Acronym Geek; 2012 Feb 11 [cited 2012 Feb 11]. Available from: http://www.acronymgeek.com/4PDT. |
| Bluebook | 4PDT, http://www.acronymgeek.com/4PDT (last visited February 11, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4PDT, http://www.acronymgeek.com/4PDT (optional description here) (as of Feb. 11, 2012, 21:44). |
| AMA | 4PDT. Acronym Geek. February 11, 2012, 21:44. Available at: http://www.acronymgeek.com/4PDT. Accessed February 11, 2012, 21:44. |