Παραπομπή APA

Hill, H. L. (1973). Mark Twain: God's fool. Happer & Row.

Παραπομπή Chicago Style

Hill, Hamlin Lewis. Mark Twain: God's Fool. New York: Happer & Row, 1973.

Παραπομπή MLA

Hill, Hamlin Lewis. Mark Twain: God's Fool. Happer & Row, 1973.