APA-viite (7. p.)
Nichols, D. R. (2002). Currency of the heart: A year of investing, death, work & coins. University of Iowa Press.
Chicago-viite (17. p.)
Nichols, Donald R. Currency of the Heart: A Year of Investing, Death, Work & Coins. Iowa City: University of Iowa Press, 2002.
MLA-viite (9. p.)
Nichols, Donald R. Currency of the Heart: A Year of Investing, Death, Work & Coins. University of Iowa Press, 2002.
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