APA (7th ed.) Citation

Humphrey, D. B. (1995). Payment systems: Principles, practice and improvement. World Bank.

Chicago Style (17th ed.) Citation

Humphrey, David B. Payment Systems: Principles, Practice and Improvement. Washington, D.C: World Bank, 1995.

MLA (9th ed.) Citation

Humphrey, David B. Payment Systems: Principles, Practice and Improvement. World Bank, 1995.