APA

Sigmund P. E., . (1963). Nicholas of Cusa and medieval political thought. Cambridge, Mass: Harvard Univ. Press.

Chicago

Sigmund Paul E, . 1963. Nicholas of Cusa and medieval political thought. Cambridge, Mass: Harvard Univ. Press.

Harvard

Sigmund P. E., . (1963). Nicholas of Cusa and medieval political thought. Cambridge, Mass: Harvard Univ. Press.

MLA

Sigmund Paul E, . Nicholas of Cusa and medieval political thought. Cambridge, Mass: Harvard Univ. Press. 1963.