Dyfyniad APA

Hey, J. D. (1974). Statistics in Economics. Martin Robertson.

Dyfyniad Arddull Chicago

Hey, John D. Statistics in Economics. London: Martin Robertson, 1974.

Dyfyniad MLA

Hey, John D. Statistics in Economics. Martin Robertson, 1974.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.