Nickles, S. H., Dolan, J. F., & Matheson, J. H. (1987). Materials for understanding credit and payment systems. West Pub. Co.
Cita Chicago (17th ed.)Nickles, Steve H., John F. Dolan, i John H. Matheson. Materials for Understanding Credit and Payment Systems. St. Paul, Minn: West Pub. Co, 1987.
Cita MLA (9th ed.)Nickles, Steve H., et al. Materials for Understanding Credit and Payment Systems. West Pub. Co, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.