Manual of Petroleum Measurement Standards Chapter 9 – Density Determination – Section 3 – Standard Test Method for Density, Relative Density, and API Gravity of Crude Petroleum and Liquid Petroleum Products by Thermohydrometer Method
Handbook / Manual / Guide by American Petroleum Institute, 11/01/2002

Manual of Petroleum Measurement Standards Chapter 9 – Density Determination – Section 3 – Standard Test Method for Density, Relative Density, and API Gravity of Crude Petroleum and Liquid Petroleum Products by Thermohydrometer Method, Third Edition
Handbook / Manual / Guide by American Petroleum Institute, 12/01/2012

Manual of Petroleum Measurement Standards Chapter 9 – Density Determination – Section 4 – Continuous Density Measurement Under Dynamic (Flowing) Conditions, First Edition
Handbook / Manual / Guide by American Petroleum Institute, 01/01/2018

Application of Hydrocarbon Phase Behavior Modeling in Upstream Measurement and Allocation Systems, First Edition
Handbook / Manual / Guide by American Petroleum Institute, 08/01/2016

Manual of Petroleum Measurement Standards Set – all chapters except chapter 11 and chapter 19
Handbook / Manual / Guide by American Petroleum Institute, 2014

A Compendium of Case Law: Federal Jurisdiction over "Navigable Waters"/"Waters of the United States"
standard by American Petroleum Institute, 06/01/2004

Report of Eastern/Western Hemisphere Production of Casing, Tubing, and Drill Pipe
Report / Survey by American Petroleum Institute, 11/01/2005

Proceedings of the 2014 Offshore Structural Reliability Conference, First Edition
standard by American Petroleum Institute, 12/01/2015

Offshore Structure Standards Set (API 2A-WSD, 2MET, 2GEO, 2EQ, and 2SIM)
standard by American Petroleum Institute, 11/01/2014