APA aipamena

North, D. C. (2006). A conceptual framework for interpreting recorded human history. National Bureau of Economic Research.

Chicago Style aipamena

North, Douglass C. A Conceptual Framework for Interpreting Recorded Human History. Cambridge: National Bureau of Economic Research, 2006.

MLA aipamena

North, Douglass C. A Conceptual Framework for Interpreting Recorded Human History. National Bureau of Economic Research, 2006.