Tilden, F. (1957). Interpreting our heritage: Principles and practices for visitor services in parks, museums, and historic places. University of North Carolina Press.
Lua i Stíl Chicago (17ú heag.)Tilden, Freeman. Interpreting Our Heritage: Principles and Practices for Visitor Services in Parks, Museums, and Historic Places. Chapel Hill: University of North Carolina Press, 1957.
Lua MLA (9ú heag.)Tilden, Freeman. Interpreting Our Heritage: Principles and Practices for Visitor Services in Parks, Museums, and Historic Places. University of North Carolina Press, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.