APA Citation

Yard, R. S. (1925). The national parks portfolio ([4th ed.].). Washington, DC: Govt. Print. Off..

Chicago Style Citation

Yard, Robert Sterling. The National Parks Portfolio. [4th ed.]. Washington, DC: Govt. Print. Off., 1925.

MLA Citation

Yard, Robert Sterling. The National Parks Portfolio. [4th ed.]. Washington, DC: Govt. Print. Off., 1925.

Warning: These citations may not always be 100% accurate.