Cita APA (7th ed.)
Howard, F. A. (1947). Buna Rubber: The birth of an industry. Nostrand.
Cita Chicago (17th ed.)
Howard, Frank Atherton. Buna Rubber: The Birth of an Industry. New York: Nostrand, 1947.
Cita MLA (9th ed.)
Howard, Frank Atherton. Buna Rubber: The Birth of an Industry. Nostrand, 1947.
Atenció: Aquestes cites poden no estar 100% correctes.