American Petroleum Institute. Refining Department. (1988). Digest of state boiler and pressure vessel rules and regulations (3rd ed.). American Petroleum Institute.
Chicago Style (17th ed.) CitationAmerican Petroleum Institute. Refining Department. Digest of State Boiler and Pressure Vessel Rules and Regulations. 3rd ed. Washington, DC: American Petroleum Institute, 1988.
MLA (9th ed.) CitationAmerican Petroleum Institute. Refining Department. Digest of State Boiler and Pressure Vessel Rules and Regulations. 3rd ed. American Petroleum Institute, 1988.
Warning: These citations may not always be 100% accurate.