Franklin

MLA

Simpson, Jeffrey, and Mary Ellen W Hern. Art of the Olmsted Landscape : His Works In New York City. New York, N.Y.: New York City Landmarks Preservation Commission , 1981.

APA

Simpson, J., & Hern, M. Ellen W. (1981). Art of the Olmsted landscape : his works in New York City. New York, N.Y.: New York City Landmarks Preservation Commission .

Chicago

Simpson, Jeffrey., and Mary Ellen W Hern. Art of the Olmsted Landscape: His Works In New York City. New York, N.Y.: New York City Landmarks Preservation Commission, 1981.