Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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