United States. Department of the Interior. (1927). Bonds under oil and gas prospecting permits, Section 4(h), Circular No. 672, modified, drilling bonds, and Circular No. 754 revoked. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of the Interior. Bonds Under Oil and Gas Prospecting Permits, Section 4(h), Circular No. 672, Modified, Drilling Bonds, and Circular No. 754 Revoked. [Washington]: GPO, 1927.
MLA (9th ed.) CitationUnited States. Department of the Interior. Bonds Under Oil and Gas Prospecting Permits, Section 4(h), Circular No. 672, Modified, Drilling Bonds, and Circular No. 754 Revoked. GPO, 1927.
Warning: These citations may not always be 100% accurate.