Dyfyniad APA

Lucas, G. H., & Bush, R. P. G. (1997). Retailing. Houghton millim company.

Dyfyniad Arddull Chicago

Lucas, George H., and Robert P. Gresham Bush. Retailing. USA: Houghton millim company, 1997.

Dyfyniad MLA

Lucas, George H., and Robert P. Gresham Bush. Retailing. Houghton millim company, 1997.

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