APA

(2005). Principles of microeconomics. Selangor: Prentice Hall Pearson Malaysia.

Chicago

2005. Principles of microeconomics. Selangor: Prentice Hall Pearson Malaysia.

Harvard

(2005). Principles of microeconomics. Selangor: Prentice Hall Pearson Malaysia.

MLA

Principles of microeconomics. Selangor: Prentice Hall Pearson Malaysia. 2005.