APA (7th ed.) Citation

Schuon, F. (1981). Esoterism as principle and as way. Perennial Books.

Chicago Style (17th ed.) Citation

Schuon, Frithjof. Esoterism as Principle and as Way. Bedfont, [England]: Perennial Books, 1981.

MLA (9th ed.) Citation

Schuon, Frithjof. Esoterism as Principle and as Way. Perennial Books, 1981.