Bourke, K. (1999). The grammar lab. Oxford University Press.
Cita Chicago (17th ed.)Bourke, Kenna. The Grammar Lab. Oxford: Oxford University Press, 1999.
Cita MLA (8th ed.)Bourke, Kenna. The Grammar Lab. Oxford University Press, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.