Dyfyniad APA

Ehn, B., & Löfgren, O. (2010). The secret world of doing nothing. University of California Press.

Dyfyniad Arddull Chicago

Ehn, Billy, and Orvar Löfgren. The Secret World of Doing Nothing. Berkeley: University of California Press, 2010.

Dyfyniad MLA

Ehn, Billy, and Orvar Löfgren. The Secret World of Doing Nothing. University of California Press, 2010.

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