Cita APA

Cromwell, H., & Cromwell, H. (1968). Working for more effective speech (3. edition.). Glenview, Illinois: Scott, Foresman.

Citación estilo Chicago

Cromwell, Harvey, y Harvey Cromwell. Working for More Effective Speech. 3. edition. Glenview, Illinois: Scott, Foresman, 1968.

Cita MLA

Cromwell, Harvey, y Harvey Cromwell. Working for More Effective Speech. 3. edition. Glenview, Illinois: Scott, Foresman, 1968.

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