Cita APA (7th ed.)

Brennan, M. J. (1987). Preface to quantitative economics and econometrics (4a. ed.). South-Western.

Cita Chicago (17th ed.)

Brennan, Michael J. Preface to Quantitative Economics and Econometrics. 4a. ed. Cincinnati: South-Western, 1987.

Cita MLA (9th ed.)

Brennan, Michael J. Preface to Quantitative Economics and Econometrics. 4a. ed. South-Western, 1987.