APA (7th ed.) Citation

United States. Department of the Interior. (1929). Collegiate extension classes in commerce and business, 1928. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Collegiate Extension Classes in Commerce and Business, 1928. [Washington]: [publisher not identified], 1929.

MLA (9th ed.) Citation

United States. Department of the Interior. Collegiate Extension Classes in Commerce and Business, 1928. [publisher not identified], 1929.

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