APA Edition Citation

Paul Heyer. (2019). Communication in history - stone age symbols to social media.

Chicago Edition Citation

Paul Heyer. Communication in History - Stone Age Symbols to Social Media. Routledge, 2019.

MLA Edition Citation

Paul Heyer. Communication in History - Stone Age Symbols to Social Media. 2019.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.