Zekerheid.

MLA

Newman, John Henry, and Zeno. Zekerheid. Hilversum: Paul brand, 1963.

APA

Newman, J. Henry, & Zeno, Z. (1963). Zekerheid. Hilversum: Paul brand.

Chicago

Newman, John Henry, and Zeno. Zekerheid. Hilversum: Paul brand, 1963.