Ault, D. S., & Orsingher, R. (1967). Banks of the world.
Dyfyniad Arddull ChicagoAult, D S., and Roger Orsingher. Banks of the World. London, Macmillan, 1967.
Dyfyniad MLAAult, D S., and Roger Orsingher. Banks of the World. 1967.
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