Cita APA

Adams, A. E. 1., & Newhall, N. W. (1960). This is the American earth. San Francisco: Sierra Club.

Citación estilo Chicago

Adams, Ansel Easton 1902-1984, y Nancy Wynne Newhall. This Is the American Earth. San Francisco: Sierra Club, 1960.

Cita MLA

Adams, Ansel Easton 1902-1984, y Nancy Wynne Newhall. This Is the American Earth. San Francisco: Sierra Club, 1960.