Dyfyniad APA

Boynton, G. (1987). Guide to the business cities of the world. Perry Books.

Dyfyniad Arddull Chicago

Boynton, Graham. Guide to the Business Cities of the World. Londres: Perry Books, 1987.

Dyfyniad MLA

Boynton, Graham. Guide to the Business Cities of the World. Perry Books, 1987.

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