PETSCHE, Johanna. A Gurdjieff Genealogy: Tracing the Manifold Ways the Gurdjieff Teaching Has Travelled. International Journal for the Study of New Religions, [S. l.], v. 4, n. 1, p. 49–79, 2013. DOI: 10.1558/ijsnr.v4i1.49. Disponível em: https://journal.equinoxpub.com/IJSNR/article/view/12146. Acesso em: 6 apr. 2025.