Gartside. (1967). Modern Business Correspondence/2e (2nd ed.). ELBS.
Chicago Edition CitationGartside. Modern Business Correspondence/2e. 2nd ed. London: ELBS, 1967.
Cita MLAGartside. Modern Business Correspondence/2e. 2nd ed. ELBS, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.