Cita APA
Tibbitts, E. L. (1963). Practice-material for the English sounds. Heffer.
Citación estilo Chicago
Tibbitts, Ernest Leonard. Practice-material for the English Sounds. Cambridge: Heffer, 1963.
Cita MLA
Tibbitts, Ernest Leonard. Practice-material for the English Sounds. Heffer, 1963.
Warning: These citations may not always be 100% accurate.