[3] "The transatlantic economy 2010" van D. Hamilton en J. Quinlan, Center for Transatlantic Relations, Johns Hopkins University, en "Basic Survey of Overseas Business Activities, 2010", METI, Japan.
[3] D. Hamilton und J. Quinlan: „The transatlantic economy 2010“, Center for Transatlantic Relations, Johns Hopkins University und „Basic Survey of Overseas Business Activities“, 2010, METI, Japan.