Tomlinson, S. (2007). Thinkwell's economics. [Austin, Tex.]: Thinkwell.
Dyfyniad Arddull ChicagoTomlinson, Steven. Thinkwell's Economics. [Austin, Tex.]: Thinkwell, 2007.
Dyfyniad MLATomlinson, Steven. Thinkwell's Economics. [Austin, Tex.]: Thinkwell, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.