Davis, P. W. (1973). Modern theories of language. Prentice-Hall.
Cita Chicago (17th ed.)Davis, Philip W. Modern Theories of Language. Englewood Cliffs, N.J: Prentice-Hall, 1973.
Cita MLA (8th ed.)Davis, Philip W. Modern Theories of Language. Prentice-Hall, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.