APA aipamena

Simon, J. L. (1998). Economics Against The Grain Julian L. Simon. Edward Elgar.

Chicago Style aipamena

Simon, Julian L. Economics Against The Grain Julian L. Simon. Edward Elgar, 1998.

MLA aipamena

Simon, Julian L. Economics Against The Grain Julian L. Simon. Edward Elgar, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.