APA (7th ed.) Citation

Tillich, P. (1962). Courage to be / by P. Tillich. Collins.

Chicago Style (17th ed.) Citation

Tillich, P. Courage to Be / by P. Tillich. Collins, 1962.

MLA (9th ed.) Citation

Tillich, P. Courage to Be / by P. Tillich. Collins, 1962.

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