| Citation | Verified | Memento | |
|---|---|---|---|
| 📖 | http://www.maine.gov/sos/cec/elec/2012/tab-ref-2012.html | 2016.04.27 |
|
| 📖 | http://www.ssa.gov/pubs/EN-05-10084.pdf | 2016.04.27 |
|