US Department of Transportation, Maritime Administration, Glossary of Shipping Terms, Washington, DC, USA 2008. http://www.marad.dot.gov/documents/Glossary_final. pdf, (Mrtm - Amer) {572}
George E. King Engineering, 5000 Oilfield Terms: A Glossary of Petroleum Engineering Terms, Abbreviations and Acronyms, US 2010. http://gekengineering.com/Downloads/Free_Downloads /Glossary_of_Petroleum_Engineering_Terms_25_August _2010.pdf, (Oil - Amer) {593}