APA引文

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引文

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

警告：这些引文格式不一定是100％准确.