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