Estados Unidos. Department of the Interior. (1990). The Secretary of the Interior's standards for rehabilitation and guidelines for rehabilitating historic buildings. U.S. Department. of the Interior, National Park Service, Heritage Preservation Services.
Cita Chicago Style (17a ed.)Estados Unidos. Department of the Interior. The Secretary of the Interior's Standards for Rehabilitation and Guidelines for Rehabilitating Historic Buildings. Washington, D.C.: U.S. Department. of the Interior, National Park Service, Heritage Preservation Services, 1990.
Cita MLA (9a ed.)Estados Unidos. Department of the Interior. The Secretary of the Interior's Standards for Rehabilitation and Guidelines for Rehabilitating Historic Buildings. U.S. Department. of the Interior, National Park Service, Heritage Preservation Services, 1990.