| APA | 4PST. (2012, February 12). In Acronym Geek. Retrieved 01:06, February 12, 2012, from http://www.acronymgeek.com/4PST |
| MLA | "4PST." Acronym Geek. (2012). Acronym Geek. 12 Feb 2012 <http://www.acronymgeek.com/4PST>. |
| MHRA | '4PST', Acronym Geek, 12 February 2012, <http://www.acronymgeek.com/4PST> [accessed 12 February 2012] |
| Chicago | "4PST", http://www.acronymgeek.com/4PST (accessed February 12, 2012). |
| CBE/CSE | 4PST [Internet]. Acronym Geek; 2012 Feb 12 [cited 2012 Feb 12]. Available from: http://www.acronymgeek.com/4PST. |
| Bluebook | 4PST, http://www.acronymgeek.com/4PST (last visited February 12, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, 4PST, http://www.acronymgeek.com/4PST (optional description here) (as of Feb. 12, 2012, 01:06). |
| AMA | 4PST. Acronym Geek. February 12, 2012, 01:06. Available at: http://www.acronymgeek.com/4PST. Accessed February 12, 2012, 01:06. |