Dataset Import - How to Format the Ndjson File for References

...
        {
            name: 'pressLinks',
            title: 'Selected Press',
            type: 'array',
            of: [{ type: 'pressLinks' }],
            group: 'press',
        },
...

export default {
    name: 'pressLinks',
    title: 'Press Links',
    type: 'object',
    fields: [
        {
            name: 'title',
            title: 'Press Outlet Name',
            type: 'string',
        }, {
            name: 'url',
            title: 'Press Link URL',
            type: 'url',
        }
    ],
}

{
 //...other fields
  pressLinks: [
    {
       _type: 'pressLink',
       title: <your-title>,
       url: <your-url
    },
    //...other pressLinks
  ]
}