Fire Tube Boilers - Engineering bibliographies - in Harvard style

In-text: (Scotch Marine Firetube Steam Boiler Manual, 2015)

Your Bibliography: 2015. Scotch Marine Firetube Steam Boiler Manual. [online] Available at: <http://www.superiorboiler.com/images/pdfs/Web%20Standard%20Steam%20Wetback%20Manual.pdf> [Accessed 11 January 2015].

In-text: (Cici Boiler Rooms, Inc. - Your source for new equipment, parts, and service!, 2015)

Your Bibliography: Ciciboilers.com. 2015. Cici Boiler Rooms, Inc. - Your source for new equipment, parts, and service!. [online] Available at: <http://www.ciciboilers.com/boiler_hurst_scotch.htm> [Accessed 8 January 2015].

In-text: (Boiler Efficiency, 2015)

Your Bibliography: Cleanboiler.org. 2015. Boiler Efficiency. [online] Available at: <http://www.cleanboiler.org/Eff_Improve/Efficiency/Oxygen_Control.asp> [Accessed 13 January 2015].

In-text: (File:Locomotive fire tube boiler schematic.png - Wikimedia Commons, 2015)

Your Bibliography: Commons.wikimedia.org. 2015. File:Locomotive fire tube boiler schematic.png - Wikimedia Commons. [online] Available at: <http://commons.wikimedia.org/wiki/File:Locomotive_fire_tube_boiler_schematic.png> [Accessed 20 January 2015].

In-text: (Pre-heat combustion air | eex.gov.au Energy Efficiency Exchange, 2015)

Your Bibliography: Eex.gov.au. 2015. Pre-heat combustion air | eex.gov.au Energy Efficiency Exchange. [online] Available at: <http://eex.gov.au/opportunity/pre-heat-combustion-air/> [Accessed 18 January 2015].

In-text: (Scotch Marine Boilers - Hurst - Brands, 2015)

Your Bibliography: Frewprocess.com. 2015. Scotch Marine Boilers - Hurst - Brands. [online] Available at: <http://www.frewprocess.com/index.php/brands/hurst-1/scotch-marine-boilers.html> [Accessed 8 January 2015].

In-text: (Fuel Efficiency, LLC. - The Turbulator, 2015)

Your Bibliography: Fuelefficiencyllc.com. 2015. Fuel Efficiency, LLC. - The Turbulator. [online] Available at: <http://www.fuelefficiencyllc.com/turbulator.html> [Accessed 13 January 2015].

In-text: (Convection Recuperators | HAMON Corporation, 2015)

Your Bibliography: Hamonusa.com. 2015. Convection Recuperators | HAMON Corporation. [online] Available at: <http://www.hamonusa.com/thermaltransfercorp/convectionrecuperators> [Accessed 18 January 2015].

In-text: (Consider Installing Turbulators on Two- and Three-Pass Firetube Boilers, 2015)

Your Bibliography: U.S. Department of Energy. 2015. Consider Installing Turbulators on Two- and Three-Pass Firetube Boilers. [online] Available at: <http://www.energy.gov/sites/prod/files/2014/05/f16/steam25_firetube_boilers.pdf> [Accessed 14 January 2015].