Dyfyniad APA

Tomlinson, S. (2007). Thinkwell's economics. [Austin, Tex.]: Thinkwell.

Dyfyniad Arddull Chicago

Tomlinson, Steven. Thinkwell's Economics. [Austin, Tex.]: Thinkwell, 2007.

Dyfyniad MLA

Tomlinson, Steven. Thinkwell's Economics. [Austin, Tex.]: Thinkwell, 2007.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.