Commerce Clearing House. (1990). Tax treaties. Commerce Clearing House.
Citazione stile Chigago Style (17a edizione)Commerce Clearing House. Tax Treaties. Chicago, Ill.: Commerce Clearing House, 1990.
Citatione MLA (8a ed.)Commerce Clearing House. Tax Treaties. Commerce Clearing House, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.