Abuur nooc ka mid ah weedhan adag Qaybta koowaad, 'The Economic Point of View ', ayaa soo baxday bishii Diseembar 2009.
Dabcan, nooc ka mid ah weedh ka adag yahay weedh waa "The mugga koowaad, 'The Economic Point of View, "'ayaa soo baxay December 2009, iyo mugga labaad, " 'Theory Suuqa iyo nidaamka qiimaha, "'ee May 2011. "