APA (7th ed.) Citation

Gruen, J., & Westerveld, B. (1991). Keith Haring: De biografie. Amsterdam: Meulenhoff.

Chicago Style (17th ed.) Citation

Gruen, John, and Bab Westerveld. Keith Haring: De Biografie. Amsterdam: Meulenhoff, 1991.

MLA (8th ed.) Citation

Gruen, John, and Bab Westerveld. Keith Haring: De Biografie. Amsterdam: Meulenhoff, 1991.

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