Brooks,Douglas.H, & Hummels, D. (2009). Infrasructure's Role in Lowering Asia's Trade costs. Edward Elgar publishing company.
استشهاد بنمط شيكاغوBrooks,Douglas.H, و David Hummels. Infrasructure's Role in Lowering Asia's Trade Costs. UK: Edward Elgar publishing company, 2009.
MLA استشهادBrooks,Douglas.H, و David Hummels. Infrasructure's Role in Lowering Asia's Trade Costs. Edward Elgar publishing company, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.