Fein, A. (1972). Frederick Law Olmsted and the American environment tradition. G. Braziller.
Cita Chicago (17th ed.)Fein, Albert. Frederick Law Olmsted and the American Environment Tradition. New York: G. Braziller, 1972.
Cita MLA (9th ed.)Fein, Albert. Frederick Law Olmsted and the American Environment Tradition. G. Braziller, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.