APA (7th ed.) Citation

Tillich, P. (1966). On the boundary: An autobiographical sketch. Scribner.

Chicago Style (17th ed.) Citation

Tillich, Paul. On the Boundary: An Autobiographical Sketch. New York: Scribner, 1966.

MLA (9th ed.) Citation

Tillich, Paul. On the Boundary: An Autobiographical Sketch. Scribner, 1966.

Warning: These citations may not always be 100% accurate.