APA

Williamson B., . (1921). Supernatural mysticism. London: Kegan Paul, Trench, Trubner.

Chicago

Williamson Benedict, . 1921. Supernatural mysticism. London: Kegan Paul, Trench, Trubner.

Harvard

Williamson B., . (1921). Supernatural mysticism. London: Kegan Paul, Trench, Trubner.

MLA

Williamson Benedict, . Supernatural mysticism. London: Kegan Paul, Trench, Trubner. 1921.