United States. Department of the Interior. (1920). Land service bulletin, Vol. 4, No. 1-12. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Department of the Interior. Land Service Bulletin, Vol. 4, No. 1-12. [Washington]: [publisher not identified], 1920.
MLA (9th ed.) CitationUnited States. Department of the Interior. Land Service Bulletin, Vol. 4, No. 1-12. [publisher not identified], 1920.
Warning: These citations may not always be 100% accurate.