Gaya APA

CASE, E. Karl, Ray C. Fair, Sharon M. Oster. (2014). Principles of economics (Ke-8). USA: Pearson Education, Inc.

Gaya Chicago

CASE, E. Karl, Ray C. Fair, Sharon M. Oster. Principles of economics. Ke-8 USA: Pearson Education, Inc, 2014. Text.

Gaya MLA

CASE, E. Karl, Ray C. Fair, Sharon M. Oster. Principles of economics. Ke-8 USA: Pearson Education, Inc, 2014. Text.

Gaya Turabian

CASE, E. Karl, Ray C. Fair, Sharon M. Oster. Principles of economics. Ke-8 USA: Pearson Education, Inc, 2014. Print.