Citazione APA

Hume, G., & Bayley, J. (1966). Manual of commercial correspondence (5th ed.). Sir Isaac Pitman and Sons.

Stile di citazione Chicago

Hume, G., e J.E Bayley. Manual of Commercial Correspondence. 5th ed. London: Sir Isaac Pitman and Sons, 1966.

Citazione MLA

Hume, G., e J.E Bayley. Manual of Commercial Correspondence. 5th ed. Sir Isaac Pitman and Sons, 1966.