De Haagse School.
MLA
De Gruyter, Willem Josiah, Patricia Wardle, and Anthony Griffiths. De Haagse School. Rotterdam: Atrium, 1968.
APA
De Gruyter, W. Josiah, Wardle, P., & Griffiths, A. (1968). De Haagse School. Rotterdam: Atrium.
Chicago
De Gruyter, Willem Josiah, Patricia Wardle, and Anthony Griffiths. De Haagse School. Rotterdam: Atrium, 1968.