<https://onlinedialogue.nl/conversie-optimalisatie-tools/funnels-google-sheets/#webpage>
<http://schema.org/author>
<https://www.webanalisten.nl/#/schema/person/1e644b0845c6d85eb66f54a2a5c90f86>
<https://www.webanalisten.nl/funnels-google-sheets>