Humphrey, D. B. (1990). The U.S. Payment System: Efficiency, Risk and the Role of the Federal Reserve: Proceedings of a Symposium on the U.S. Payment System sponsored by the Federal Reserve Bank of Richmond (1st ed. 1990.). Springer Netherlands. https://doi.org/10.1007/978-94-009-2510-6
Chicago-Zitierstil (17. Ausg.)Humphrey, David B. The U.S. Payment System: Efficiency, Risk and the Role of the Federal Reserve: Proceedings of a Symposium on the U.S. Payment System Sponsored by the Federal Reserve Bank of Richmond. 1st ed. 1990. Dordrecht: Springer Netherlands, 1990. https://doi.org/10.1007/978-94-009-2510-6.
MLA-Zitierstil (9. Ausg.)Humphrey, David B. The U.S. Payment System: Efficiency, Risk and the Role of the Federal Reserve: Proceedings of a Symposium on the U.S. Payment System Sponsored by the Federal Reserve Bank of Richmond. 1st ed. 1990. Springer Netherlands, 1990. https://doi.org/10.1007/978-94-009-2510-6.