Catalog

Cita APA (7a ed.)

United States. National Park Service, Yard, R. S., & Story, I. F. (1931). The national parks portfolio (6th ed.). U.S. Govt. Print. Off..

Cita Chicago Style (17a ed.)

United States. National Park Service, Robert Sterling Yard, y Isabelle F. Story. The National Parks Portfolio. 6th ed. Washington: U.S. Govt. Print. Off., 1931.

Cita MLA (8a ed.)

United States. National Park Service, et al. The National Parks Portfolio. 6th ed. U.S. Govt. Print. Off., 1931.