Dyfyniad APA

Schaefer, R. T. (2004). Racial and ethnic groups. Upper Saddle River, N.J: Pearson/Prentice Hall.

Dyfyniad Arddull Chicago

Schaefer, Richard T. Racial and Ethnic Groups. Upper Saddle River, N.J: Pearson/Prentice Hall, 2004.

Dyfyniad MLA

Schaefer, Richard T. Racial and Ethnic Groups. Upper Saddle River, N.J: Pearson/Prentice Hall, 2004.

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