Cita APA (7a ed.)

Adams, A., & Newhall, N. W. (1960). This is the American earth. Sierra Club.

Cita Chicago Style (17a ed.)

Adams, Ansel, y Nancy Wynne Newhall. This Is the American Earth. San Francisco: Sierra Club, 1960.

Cita MLA (9a ed.)

Adams, Ansel, y Nancy Wynne Newhall. This Is the American Earth. Sierra Club, 1960.