Cita APA (7th ed.)
Clark, K. (1969). Civilisation: A personal view. Harper & Row.
Cita Chicago (17th ed.)
Clark, Kenneth. Civilisation: A Personal View. New York ; Evanston: Harper & Row, 1969.
Cita MLA (9th ed.)
Clark, Kenneth. Civilisation: A Personal View. Harper & Row, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.