Fry, R., Hume, G., & Bayley, J. E. (1967). Manual of commercial correspondence (5th ed.). Pitman.
Chicago Style (17th ed.) CitationFry, Roland, G. Hume, and J. E. Bayley. Manual of Commercial Correspondence. 5th ed. London: Pitman, 1967.
MLA (8th ed.) CitationFry, Roland, et al. Manual of Commercial Correspondence. 5th ed. Pitman, 1967.
Warning: These citations may not always be 100% accurate.