APA (7th ed.) Citation

Twombly, C., Bastian, H., & Boenig, L. (2017). Cy Twombly: The printed graphic work : catalogue raisonné. Schirmer/Mosel.

Chicago Style (17th ed.) Citation

Twombly, Cy, Heiner Bastian, and Lisa Boenig. Cy Twombly: The Printed Graphic Work : Catalogue Raisonné. [München]: Schirmer/Mosel, 2017.

MLA (9th ed.) Citation

Twombly, Cy, et al. Cy Twombly: The Printed Graphic Work : Catalogue Raisonné. Schirmer/Mosel, 2017.