Lopez, Robert Sabatino (Summer 1951). “The Dollar of the Middle Ages”. 《The Journal of Economic History》 11 (3): 209–234. doi:10.1017/s0022050700084746. JSTOR2113933.
Lopez, Robert Sabatino (Summer 1951). “The Dollar of the Middle Ages”. 《The Journal of Economic History》 11 (3): 209–234. doi:10.1017/s0022050700084746. JSTOR2113933.
Lipsey 1975, 683–702쪽. harv error: 대상 없음: CITEREFLipsey1975 (help)
Bordo, Dittmar & Gavin 2003 괄호 없는 하버드 인용 error: 대상 없음: CITEREFBordoDittmarGavin2003 (help) "in a world with two capital goods, the one with the lower depreciation rate emerges as commodity money"