Cita APA (7a ed.)

Signs of Life (Washington). (1976). Signs of life: Symbols in the American city. Smithsonian Institution.

Cita Chicago Style (17a ed.)

Signs of Life (Washington). Signs of Life: Symbols in the American City. Washington: Smithsonian Institution, 1976.

Cita MLA (9a ed.)

Signs of Life (Washington). Signs of Life: Symbols in the American City. Smithsonian Institution, 1976.