Gartside, L. (1976). Modern business correspondence : a practical: Course for use in schools, and by all who would write better business letters. The English language book society.
Citação norma ChicagoGartside, L. Modern Business Correspondence : A Practical: Course for Use in Schools, and by All Who Would Write Better Business Letters. London: The English language book society, 1976.
Citação norma MLAGartside, L. Modern Business Correspondence : A Practical: Course for Use in Schools, and by All Who Would Write Better Business Letters. The English language book society, 1976.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.