APA (7th ed.) Citation

United States. National Park Service & United States. Office of the National Park Service Liaison to the White House. The White House grounds and gardens. National Park Service.

Chicago Style (17th ed.) Citation

United States. National Park Service and United States. Office of the National Park Service Liaison to the White House. The White House Grounds and Gardens. [Washington, D.C.]: National Park Service.

MLA (9th ed.) Citation

United States. National Park Service and United States. Office of the National Park Service Liaison to the White House. The White House Grounds and Gardens. National Park Service.