APA

Van Paassen P., . (1939). Days of our years. New York: Hillman-Curl, inc.

Chicago

Van Paassen Pierre, . 1939. Days of our years. New York: Hillman-Curl, inc.

Harvard

Van Paassen P., . (1939). Days of our years. New York: Hillman-Curl, inc.

MLA

Van Paassen Pierre, . Days of our years. New York: Hillman-Curl, inc. 1939.