APA-viite (7. p.)
Richards, W. A. (2016). Sacred knowledge: Psychedelics and religious experiences. Columbia University Press.
Chicago-viite (17. p.)
Richards, William A. Sacred Knowledge: Psychedelics and Religious Experiences. New York: Columbia University Press, 2016.
MLA-viite (9. p.)
Richards, William A. Sacred Knowledge: Psychedelics and Religious Experiences. Columbia University Press, 2016.
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