Somchai Wongaroon. (1986). Constraints to export trade to the United States: A study of selected Thai business. United States International University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Somchai Wongaroon. Constraints to Export Trade to the United States: A Study of Selected Thai Business. San Diego: United States International University, 1986.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Somchai Wongaroon. Constraints to Export Trade to the United States: A Study of Selected Thai Business. United States International University, 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.