APA

Cross R., . (1999). Duns Scotus. New York ; Oxford: Oxford University Press.

Chicago

Cross Richard, . 1999. Duns Scotus. New York ; Oxford: Oxford University Press.

Harvard

Cross R., . (1999). Duns Scotus. New York ; Oxford: Oxford University Press.

MLA

Cross Richard, . Duns Scotus. New York ; Oxford: Oxford University Press. 1999.