APA

Dunn A. F., . (1950). A pilgrim's guide to Rome. New York: Prentice-Hall.

Chicago

Dunn A F, . 1950. A pilgrim's guide to Rome. New York: Prentice-Hall.

Harvard

Dunn A. F., . (1950). A pilgrim's guide to Rome. New York: Prentice-Hall.

MLA

Dunn A F, . A pilgrim's guide to Rome. New York: Prentice-Hall. 1950.