APA

Peursen C. A. v., . (1970). Ludwig Wittgenstein: an introduction to his philosophy. New York: E.P. Dutton.

Chicago

Peursen Cornelis Anthonie van, . 1970. Ludwig Wittgenstein: an introduction to his philosophy. New York: E.P. Dutton.

Harvard

Peursen C. A. v., . (1970). Ludwig Wittgenstein: an introduction to his philosophy. New York: E.P. Dutton.

MLA

Peursen Cornelis Anthonie van, . Ludwig Wittgenstein: an introduction to his philosophy. New York: E.P. Dutton. 1970.