Cita APA (7th ed.)

Koopmans, L. H. (1987). Introduction to contemporary statistical methods (2a. ed.). Duxbury.

Cita Chicago (17th ed.)

Koopmans, Lambert Herman. Introduction to Contemporary Statistical Methods. 2a. ed. Boston: Duxbury, 1987.

Cita MLA (9th ed.)

Koopmans, Lambert Herman. Introduction to Contemporary Statistical Methods. 2a. ed. Duxbury, 1987.