APA (7th ed.) Citation

Watts, A. (1960). This is it: And other essays on Zen and spiritual experience. Pantheon Books.

Chicago Style (17th ed.) Citation

Watts, Alan. This Is It: And Other Essays on Zen and Spiritual Experience. New York, NY: Pantheon Books, 1960.

MLA (9th ed.) Citation

Watts, Alan. This Is It: And Other Essays on Zen and Spiritual Experience. Pantheon Books, 1960.