APA

Klein F., . (1940). The doctrine of the trinity. New York: Kenedy.

Chicago

Klein Félix, . 1940. The doctrine of the trinity. New York: Kenedy.

Harvard

Klein F., . (1940). The doctrine of the trinity. New York: Kenedy.

MLA

Klein Félix, . The doctrine of the trinity. New York: Kenedy. 1940.