| Style | Reference Text |
|---|
| APA | PPGN. (2012, May 27). In All Acronyms. Retrieved 03:16, May 27, 2012, from http://www.all-acronyms.com/PPGN |
| MLA | "PPGN." All Acronyms. 27 May 2012, 03:16. All Acronyms. 27 May 2012 <http://www.all-acronyms.com/PPGN>. |
| MHRA | 'PPGN', All Acronyms, 27 May 2012, 03:16, <http://www.all-acronyms.com/PPGN> [accessed 27 May 2012] |
| Chicago | "PPGN," http://www.all-acronyms.com/PPGN (accessed May 27, 2012). |
| CBE/CSE | PPGN [Internet]. All Acronyms; 2012 May 27, 03:16 [cited 2012 May 27]. Available from: http://www.all-acronyms.com/PPGN. |
| Bluebook | PPGN, http://www.all-acronyms.com/PPGN (last visited May 27, 2012). |
| Bluebook: Harvard JOLT | See All Acronyms, PPGN, http://www.all-acronyms.com/PPGN (optional description here) (as of May. 27, 2012, 03:16). |
| AMA | PPGN. All Acronyms. May 27, 2012, 03:16. Available at: http://www.all-acronyms.com/PPGN. Accessed May 27, 2012. |
Primary Producer Seasonal National Cha…