Dyfyniad APA

(2017). This thing called theory. Routledge.

Dyfyniad Arddull Chicago

This Thing Called Theory. Routledge, 2017.

Dyfyniad MLA

This Thing Called Theory. Routledge, 2017.

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