Cita APA (7a ed.)

Progoff, I. (1969). The cloud of unknowing. Julian Press.

Cita Chicago Style (17a ed.)

Progoff, Ira. The Cloud of Unknowing. New York: Julian Press, 1969.

Cita MLA (9a ed.)

Progoff, Ira. The Cloud of Unknowing. Julian Press, 1969.