- Frank de Boer about the loss of his father: ‘Depression is a terrible thing’ Het Parool
- Frank de Boer’s father Cees attempted suicide and was given euthanasia NOT
- Frank de Boer: ‘We had to put our father out of his misery’ AD.nl
- Frank de Boer tells his story: ‘It was just done, Dad didn’t want to do it anymore’ VoetbalPrimeur.nl
- Frank de Boer opens his book: ‘My father took his own life’ Football zone