https://bitcoin.org/en/about-us: "Bitcoin.org was originally registered and owned by Bitcoin's first two developers, Satoshi Nakamoto and Martti Malmi. When Nakamoto left the project, he gave ownership of the domain to additional people, separate from the Bitcoin developers, to spread responsibility and prevent any one person or group from easily gaining control over the Bitcoin project."
Satoshi Nakamoto even disclaimed that bitcoin.com was "unrelated", and that he/she/they registered bitcoin.org as the site they using to publish information.
Best to link to the one on bitcoin.com: https://www.bitcoin.com/bitcoin.pdf