APA (7th ed.) Citation

United States. Department of the Interior. (1919). Summer health and play school: Open door to health for city children. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Summer Health and Play School: Open Door to Health for City Children. [Washington]: [publisher not identified], 1919.

MLA (9th ed.) Citation

United States. Department of the Interior. Summer Health and Play School: Open Door to Health for City Children. [publisher not identified], 1919.