APA (7th ed.) Citation

Koopmans, L. H. (1981). An introduction to contemporary statistics. Duxbury.

Chicago Style (17th ed.) Citation

Koopmans, Lambert Herman. An Introduction to Contemporary Statistics. California: Duxbury, 1981.

MLA (9th ed.) Citation

Koopmans, Lambert Herman. An Introduction to Contemporary Statistics. Duxbury, 1981.

Warning: These citations may not always be 100% accurate.