RUUD PAUL A. (2000). INTRODUCTION TO CLASSICAL ECONOMETRIC THEORY. OXFORD UNIVERSITY PRESS.
芝加哥风格引文RUUD PAUL A. INTRODUCTION TO CLASSICAL ECONOMETRIC THEORY. NEW YORK: OXFORD UNIVERSITY PRESS, 2000.
MLA引文RUUD PAUL A. INTRODUCTION TO CLASSICAL ECONOMETRIC THEORY. OXFORD UNIVERSITY PRESS, 2000.
警告：这些引文格式不一定是100％准确.