APA (7th ed.) Citation

United States. Department of the Interior. (1930). Early childhood education; recent contributions to literature issued by schools and professional organizations. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Early Childhood Education; Recent Contributions to Literature Issued by Schools and Professional Organizations. [Washington]: [publisher not identified], 1930.

MLA (9th ed.) Citation

United States. Department of the Interior. Early Childhood Education; Recent Contributions to Literature Issued by Schools and Professional Organizations. [publisher not identified], 1930.