Dyfyniad APA

CASE, K. E. (2017). Principles of macro-economics. Pearson Education.

Dyfyniad Arddull Chicago

CASE, Karl E. Principles of Macro-economics. Pearson Education, 2017.

Dyfyniad MLA

CASE, Karl E. Principles of Macro-economics. Pearson Education, 2017.

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