Dyfyniad APA

Williams, R. L., & Williams, H. A. (2020). Vintage Marketing Differentiation. 1st ed. 2017. Palgrave Macmillan US.

Dyfyniad Arddull Chicago

Williams, Robert L., và Helena A. Williams. Vintage Marketing Differentiation. 1st Ed. 2017. Palgrave Macmillan US, 2020.

Dyfyniad MLA

Williams, Robert L., và Helena A. Williams. Vintage Marketing Differentiation. 1st Ed. 2017. Palgrave Macmillan US, 2020.

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