(1) LZ Digital User Survey 2022, Karwath Marktforschung, Oldendorf
(2) Follower of the LZ social media channels: Facebook, Instagram, X (formerly Twitter), LinkedIn, 06.05.2024
(3) Recipient file, LZ Karriere Newsletter, February 2023
(4) LZ Digital User Survey 2022, Karwath Marktforschung, Oldendorf