APA (7th ed.) Citation

Gartside, L. (1993). Model business letters (4. ed., repr.). Pitman.

Chicago Style (17th ed.) Citation

Gartside, Leonard. Model Business Letters. 4. ed., repr. London: Pitman, 1993.

MLA (9th ed.) Citation

Gartside, Leonard. Model Business Letters. 4. ed., repr. Pitman, 1993.