Dawson, M. A. (1973). Level Orange Language for daily use. Harcourt Brace Jovanovich.
Cita Chicago (17th ed.)Dawson, Mildred A. Level Orange Language for Daily Use. Harcourt Brace Jovanovich, 1973.
Cita MLA (9th ed.)Dawson, Mildred A. Level Orange Language for Daily Use. Harcourt Brace Jovanovich, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.