N600 without marriage certificate

[rookie123 0]

Hi, I am applying for the N600 through my father's naturalization. My family(mom, dad, and sis) and I arrived in the US back in 1991. We received our green card not long after. In 2000, my father became a US citizen. I was 13 years old at time and was living with my parents. However, my parents do not have a marriage certificate, but I was in the legal and physical present of my father til I was 18. I do have other documents such as birth certificate, school records with both my parents name and address, my learner's permit when I was 16 with the same address as my father. I am also listed on his beneficiary with his life insurance that he got back in 2000. Will this be enough proof? Thanks everyone

My parents got married in Laos back in the early 1980's. They grew up in a village and got married the Laos traditional way and during that time period a marriage certificate wasn't needed.