APA (7th ed.) Citation

Kerpen,Dave. (2017). The art of people. Portfolio Penguin.

Chicago Style (17th ed.) Citation

Kerpen,Dave. The Art of People. UK: Portfolio Penguin, 2017.

MLA (9th ed.) Citation

Kerpen,Dave. The Art of People. Portfolio Penguin, 2017.

Warning: These citations may not always be 100% accurate.