Cita APA

Story, I. F. (1961). The National park story in pictures. [S.l.]: U.S. Department of the interior.

Citación estilo Chicago

Story, Isabelly F. The National Park Story in Pictures. [S.l.]: U.S. Department of the interior, 1961.

Cita MLA

Story, Isabelly F. The National Park Story in Pictures. [S.l.]: U.S. Department of the interior, 1961.