Cita APA (7th ed.)

Highsmith, C. M., & Landphair, T. (1997). Colorado: A photographic tour. Crescent Books.

Cita Chicago (17th ed.)

Highsmith, Carol M., i Ted Landphair. Colorado: A Photographic Tour. New Ypork: Crescent Books, 1997.

Cita MLA (9th ed.)

Highsmith, Carol M., i Ted Landphair. Colorado: A Photographic Tour. Crescent Books, 1997.