Flavell, L., & Flavell, R. (2010). Dictionary of word origins (Revised and updated edition.). Kyle Cathie Limited.
Cita Chicago (17th ed.)Flavell, Linda, i Roger Flavell. Dictionary of Word Origins. Revised and updated edition. London: Kyle Cathie Limited, 2010.
Cita MLA (9th ed.)Flavell, Linda, i Roger Flavell. Dictionary of Word Origins. Revised and updated edition. Kyle Cathie Limited, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.