Whaley, D. J. (1999). Problems and materials on payment law (5th ed.). Gaithersburg, Md.: Aspen Law & Business.
Παραπομπή Chicago StyleWhaley, Douglas J. Problems and Materials On Payment Law. 5th ed. Gaithersburg, Md.: Aspen Law & Business, 1999.
Παραπομπή MLAWhaley, Douglas J. Problems and Materials On Payment Law. 5th ed. Gaithersburg, Md.: Aspen Law & Business, 1999.
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