| APA | GNP. (2012, February 9). In Acronym Geek. Retrieved 20:24, February 9, 2012, from http://www.acronymgeek.com/GNP |
| MLA | "GNP." Acronym Geek. (2012). Acronym Geek. 9 Feb 2012 <http://www.acronymgeek.com/GNP>. |
| MHRA | 'GNP', Acronym Geek, 9 February 2012, <http://www.acronymgeek.com/GNP> [accessed 9 February 2012] |
| Chicago | "GNP", http://www.acronymgeek.com/GNP (accessed February 9, 2012). |
| CBE/CSE | GNP [Internet]. Acronym Geek; 2012 Feb 9 [cited 2012 Feb 9]. Available from: http://www.acronymgeek.com/GNP. |
| Bluebook | GNP, http://www.acronymgeek.com/GNP (last visited February 9, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, GNP, http://www.acronymgeek.com/GNP (optional description here) (as of Feb. 9, 2012, 20:24). |
| AMA | GNP. Acronym Geek. February 9, 2012, 20:24. Available at: http://www.acronymgeek.com/GNP. Accessed February 9, 2012, 20:24. |