Dyfyniad APA

Davis, J. E., & Fernlund, P. M. (2009). Civics and economics. Pearson/Prentice Hall.

Dyfyniad Arddull Chicago

Davis, James E., and Phyllis Maxey Fernlund. Civics and Economics. Needham, MA: Pearson/Prentice Hall, 2009.

Dyfyniad MLA

Davis, James E., and Phyllis Maxey Fernlund. Civics and Economics. Pearson/Prentice Hall, 2009.

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