APA
The Shell Petroleum Company, .The lubrication of stean turbines. London: London and Maidstone.
Chicago
The Shell Petroleum Company, .The lubrication of stean turbines. London: London and Maidstone.
Harvard
The Shell Petroleum Company, .The lubrication of stean turbines. London: London and Maidstone.
MLA
The Shell Petroleum Company, .London: London and Maidstone. .