APA

Breisach E., . (1962). Introduction to modern existentialism. New York: Grove Press.

Chicago

Breisach Ernst, . 1962. Introduction to modern existentialism. New York: Grove Press.

Harvard

Breisach E., . (1962). Introduction to modern existentialism. New York: Grove Press.

MLA

Breisach Ernst, . Introduction to modern existentialism. New York: Grove Press. 1962.