APA

Theil H., . (1971). Principles of econometrics. New York: Wiley.

Chicago

Theil Henri, . 1971. Principles of econometrics. New York: Wiley.

Harvard

Theil H., . (1971). Principles of econometrics. New York: Wiley.

MLA

Theil Henri, . Principles of econometrics. New York: Wiley. 1971.