Facebook turned down WhatsApp co-founder Brian Acton for job in 2009. www.theguardian.com. Dostupné online.
washingtonpost.com
WhatsApp founder plans to leave after broad clashes with parent Facebook. The Washington Post. Dostupné online. ISSN0190-8286.
web.archive.org
The billionaire cofounder of WhatsApp is ‘resting and vesting’ — showing up to Facebook and barely working to collect a $450 million payday. www.businessinsider.sg. Dostupné v archivu pořízeném dne 2020-01-02.Archivováno 2. 1. 2020 na Wayback Machine.