Samuelson, P. The Gains from International Trade. The Canadian Journal of Economics and Political Science. 1939, 5 (2): 195–205. JSTOR 137133. doi:10.2307/137133.
Samuelson, P. The Gains from International Trade. The Canadian Journal of Economics and Political Science. 1939, 5 (2): 195–205. JSTOR 137133. doi:10.2307/137133.
thefreedictionary.com
retail. The Free Dictionary. [2022-07-16]. (原始内容存档于2020-08-11).
"O ye who believe! Eat not up your property among yourselves in vanities, but let there be among you traffic and trade by mutual good-will." 古兰经4:29
and "Allah has allowed trading and forbidden usury." 古兰经2:275