Cita APA (7a ed.)

Da Costa, B. (1971). Historic houses of America open to the public. American Heritage.

Cita Chicago Style (17a ed.)

Da Costa, Beverley. Historic Houses of America Open to the Public. New York: American Heritage, 1971.

Cita MLA (9a ed.)

Da Costa, Beverley. Historic Houses of America Open to the Public. American Heritage, 1971.