Cita APA (7a ed.)

Johnston, M. D. (1987). The spiritual logic of Ramon Llull. Clarendon Press.

Cita Chicago Style (17a ed.)

Johnston, Mark David. The Spiritual Logic of Ramon Llull. Oxford: Clarendon Press, 1987.

Cita MLA (9a ed.)

Johnston, Mark David. The Spiritual Logic of Ramon Llull. Clarendon Press, 1987.