Lua APA (7ú heag.)
Schuppert, G. F., & Barrett, R. (2017). The World of Rules: A Somewhat Different Measurement of the World. Max Planck Institute for European History.
Lua i Stíl Chicago (17ú heag.)
Schuppert, Gunnar Folke, agus Rhodes Barrett. The World of Rules: A Somewhat Different Measurement of the World. Frankfurt am Main: Max Planck Institute for European History, 2017.
Lua MLA (9ú heag.)
Schuppert, Gunnar Folke, agus Rhodes Barrett. The World of Rules: A Somewhat Different Measurement of the World. Max Planck Institute for European History, 2017.
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