APA (7th ed.) Citation

Piggott, J., & Whalley, J. (1998). VAT base broadening, self supply, and the informal sector. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Piggott, John, and John Whalley. VAT Base Broadening, Self Supply, and the Informal Sector. Cambridge, Mass: National Bureau of Economic Research, 1998.

MLA (9th ed.) Citation

Piggott, John, and John Whalley. VAT Base Broadening, Self Supply, and the Informal Sector. National Bureau of Economic Research, 1998.