Faʻatupu se faʻamatalaga sili atu ona faigata o lenei fuaiupu O le vaega muamua,''The Economic Point of View ', na sau i fafo ia Tesema 2009.
O le mea moni, o se lomiga e sili atu ona lavelave o le fuaiupu o le "O le tusi muamua,''The Economic Point of View,'na sau i fafo ia Tesema 2009, ma le tusi lona lua,''Market Theory and the Price System,'ia Me 2011. "