APA (7th ed.) Citation

Gruen, J. (1991). Keith Haring : the authorized biography / John Gruen: The authorized biography. Thames and Hudson.

Chicago Style (17th ed.) Citation

Gruen, John. Keith Haring : The Authorized Biography / John Gruen: The Authorized Biography. London: Thames and Hudson, 1991.

MLA (9th ed.) Citation

Gruen, John. Keith Haring : The Authorized Biography / John Gruen: The Authorized Biography. Thames and Hudson, 1991.

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