Cita APA

Crowell, T. L. (1961). Modern spoken English; an advanced practice, book. New Yorks: McGraw-Hill.

Citación estilo Chicago

Crowell, Thomas Lee. Modern Spoken English; an Advanced Practice, Book. New Yorks: McGraw-Hill, 1961.

Cita MLA

Crowell, Thomas Lee. Modern Spoken English; an Advanced Practice, Book. New Yorks: McGraw-Hill, 1961.