| APA | TPN. (2012, February 10). In Acronym Geek. Retrieved 10:45, February 10, 2012, from http://www.acronymgeek.com/TPN |
| MLA | "TPN." Acronym Geek. (2012). Acronym Geek. 10 Feb 2012 <http://www.acronymgeek.com/TPN>. |
| MHRA | 'TPN', Acronym Geek, 10 February 2012, <http://www.acronymgeek.com/TPN> [accessed 10 February 2012] |
| Chicago | "TPN", http://www.acronymgeek.com/TPN (accessed February 10, 2012). |
| CBE/CSE | TPN [Internet]. Acronym Geek; 2012 Feb 10 [cited 2012 Feb 10]. Available from: http://www.acronymgeek.com/TPN. |
| Bluebook | TPN, http://www.acronymgeek.com/TPN (last visited February 10, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, TPN, http://www.acronymgeek.com/TPN (optional description here) (as of Feb. 10, 2012, 10:45). |
| AMA | TPN. Acronym Geek. February 10, 2012, 10:45. Available at: http://www.acronymgeek.com/TPN. Accessed February 10, 2012, 10:45. |