Gartside, L. (1986). Modern business correspondence: A practical course for use in schools, and by all who would ... (4th ed.). Macdonald and Evans.
Lua i Stíl Chicago (17ú heag.)Gartside, L. Modern Business Correspondence: A Practical Course for Use in Schools, and by All Who Would ... 4th ed. London: Macdonald and Evans, 1986.
Lua MLA (9ú heag.)Gartside, L. Modern Business Correspondence: A Practical Course for Use in Schools, and by All Who Would ... 4th ed. Macdonald and Evans, 1986.
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