Cita APA (7a ed.)

Piermartini, R. (2004). The role of export taxes in the field of primary commodities. World Trade Organization.

Cita Chicago Style (17a ed.)

Piermartini, Roberta. The Role of Export Taxes in the Field of Primary Commodities. Geneva: World Trade Organization, 2004.

Cita MLA (9a ed.)

Piermartini, Roberta. The Role of Export Taxes in the Field of Primary Commodities. World Trade Organization, 2004.