Dyfyniad APA

Crump, N. (1963). ABC of the foreign exchange (13th ed.). Macmillan.

Dyfyniad Arddull Chicago

Crump, Norman. ABC of the Foreign Exchange. 13th ed. London: Macmillan, 1963.

Dyfyniad MLA

Crump, Norman. ABC of the Foreign Exchange. 13th ed. Macmillan, 1963.

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