Hellema, D., Wiebes, C., Witte, G. T., & Pearson, M. (2004). The Netherlands and the oil crisis: Business as usual. Amsterdam University Press.
Lua i Stíl Chicago (17ú heag.)Hellema, Duco, Cees Wiebes, Gerardus Tobias Witte, agus Murray Pearson. The Netherlands and the Oil Crisis: Business as Usual. Amsterdam: Amsterdam University Press, 2004.
Lua MLA (9ú heag.)Hellema, Duco, et al. The Netherlands and the Oil Crisis: Business as Usual. Amsterdam University Press, 2004.
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