| APA | NGP. (2012, February 13). In Acronym Geek. Retrieved 22:57, February 13, 2012, from http://www.acronymgeek.com/NGP |
| MLA | "NGP." Acronym Geek. (2012). Acronym Geek. 13 Feb 2012 <http://www.acronymgeek.com/NGP>. |
| MHRA | 'NGP', Acronym Geek, 13 February 2012, <http://www.acronymgeek.com/NGP> [accessed 13 February 2012] |
| Chicago | "NGP", http://www.acronymgeek.com/NGP (accessed February 13, 2012). |
| CBE/CSE | NGP [Internet]. Acronym Geek; 2012 Feb 13 [cited 2012 Feb 13]. Available from: http://www.acronymgeek.com/NGP. |
| Bluebook | NGP, http://www.acronymgeek.com/NGP (last visited February 13, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, NGP, http://www.acronymgeek.com/NGP (optional description here) (as of Feb. 13, 2012, 22:57). |
| AMA | NGP. Acronym Geek. February 13, 2012, 22:57. Available at: http://www.acronymgeek.com/NGP. Accessed February 13, 2012, 22:57. |