APA

Heidegger M., . (1958). What is philosophy?. New York: Twayne Publishers.

Chicago

Heidegger Martin, . 1958. What is philosophy?. New York: Twayne Publishers.

Harvard

Heidegger M., . (1958). What is philosophy?. New York: Twayne Publishers.

MLA

Heidegger Martin, . What is philosophy?. New York: Twayne Publishers. 1958.