API Recommended Practice 44, Sampling Petroleum Reservoir Fluids, Second Edition
standard by American Petroleum Institute, 04/01/2003

Seat Tightness of Pressure Relief Valves
standard by American Petroleum Institute, 07/01/1991

Inspection of Fired Boilers and Heaters, Second Edition
standard by American Petroleum Institute, 12/01/2002

Process Instrument and Control
standard by American Petroleum Institute, 09/01/1995

Marking Liquid Petroleum Pipeline Facilities, 3rd Edition
standard by American Petroleum Institute, 07/31/2003

Pumps. COmpressors and Blowers and Their Drivers
standard by American Petroleum Institute, 01/01/1976

Specification for Unbonded Flexible Pipe, Third Edition (ISO 13628-2:2006, Identical), Includes Errata (2009 and 2010)
standard by American Petroleum Institute, 07/01/2008

Testing Protocols – General Guidelines for Developing Testing Protocols for Devices Used in the Measurement of Hydrocarbon Fluids, First Edition
Handbook / Manual / Guide by American Petroleum Institute, 11/01/2006

Water Calibration of Volumetric Provers
Handbook / Manual / Guide by American Petroleum Institute, 08/01/1984

Marine Measurement – Section 8: Guidelines for Pre-loading Inspection of Marine Vessel Cargo Tanks and Their Cargo-handling Systems, Second Edition
Handbook / Manual / Guide by American Petroleum Institute, 08/01/2016