(1986). The sword of gnosis: Metaphysics, cosmology, tradition, symbolism. Arkana.
Citazione stile Chigago Style (17a edizione)The Sword of Gnosis: Metaphysics, Cosmology, Tradition, Symbolism. London [etc.]: Arkana, 1986.
Citatione MLA (9a ed.)The Sword of Gnosis: Metaphysics, Cosmology, Tradition, Symbolism. Arkana, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.