Cita APA (7a ed.)

Engen, J. H. v. (1983). Rupert of Deutz. University of Califonia Press.

Cita Chicago Style (17a ed.)

Engen, John H. van. Rupert of Deutz. Berkeley [etc.]: University of Califonia Press, 1983.

Cita MLA (9a ed.)

Engen, John H. van. Rupert of Deutz. University of Califonia Press, 1983.