Hello, so im doing a persuasive speech on vaccination and how important it is for parents to vaccinate their child.

Hello, so im doing a persuasive speech on vaccination and how important it is for parents to vaccinate their child. Well my three main points are the importance of vaccination, whats causing parents not to vaccinate their child, and lastly how we can get parents to vaccinate them. Well I need help on how we can get parents to vaccinate their children, I can't seem to find much information and sources for that.