Dyfyniad APA

Business Standard Research Bureau. Business standard. Business Standard Research Bureau.

Dyfyniad Arddull Chicago

Business Standard Research Bureau. Business Standard. Calcutta: Business Standard Research Bureau.

Dyfyniad MLA

Business Standard Research Bureau. Business Standard. Business Standard Research Bureau.

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