Steiner, R., & Collis, J. (2014). The world of the senses and the world of the spirit: Six lectures given in Hanover between 27 December 1911 and 1 January 1912. Rudolf Steiner Press.
Chicago Style (17th ed.) CitationSteiner, Rudolf, and Johanna Collis. The World of the Senses and the World of the Spirit: Six Lectures Given in Hanover Between 27 December 1911 and 1 January 1912. Forest Row, England: Rudolf Steiner Press, 2014.
MLA (9th ed.) CitationSteiner, Rudolf, and Johanna Collis. The World of the Senses and the World of the Spirit: Six Lectures Given in Hanover Between 27 December 1911 and 1 January 1912. Rudolf Steiner Press, 2014.
Warning: These citations may not always be 100% accurate.