Cita APA (7th ed.)

Valavanis Vail, S., & Conrad, A. H. (1959). Econometrics: An introduction to maximum likelihood methods. McGraw-Hill.

Cita Chicago (17th ed.)

Valavanis Vail, Stefan, i Alfred H. Conrad. Econometrics: An Introduction to Maximum Likelihood Methods. New York: McGraw-Hill, 1959.

Cita MLA (9th ed.)

Valavanis Vail, Stefan, i Alfred H. Conrad. Econometrics: An Introduction to Maximum Likelihood Methods. McGraw-Hill, 1959.