Griffiths, B. (1975). Invisible barriers to invisible trade. New York: Holmes & Meier publisher.
シカゴスタイル引用形Griffiths, Brian. Invisible Barriers to Invisible Trade. New York: Holmes & Meier publisher, 1975.
MLA引用形式Griffiths, Brian. Invisible Barriers to Invisible Trade. New York: Holmes & Meier publisher, 1975.
警告: この引用は必ずしも正確ではありません.