https://docs.google.com/viewer?url=http%3A%2F%2Fwww.uscis.gov%2Fsites%2Fdefault%2Ffiles%2FUSCIS%2FResources%2FB5en.pdf
참조하세요 작성방법이 상세히 설명되어 있습니다.
https://docs.google.com/viewer?url=http%3A%2F%2Fwww.uscis.gov%2Fsites%2Fdefault%2Ffiles%2Ffiles%2Fform%2Fi-131instr.pdf