Cita APA (7th ed.)

Kaufman, L., & Rousseeuw, P. J. (1990). Finding groups in data: An introduction to cluster analysis. Wiley.

Cita Chicago (17th ed.)

Kaufman, Leonard, i Peter J. Rousseeuw. Finding Groups in Data: An Introduction to Cluster Analysis. New York: Wiley, 1990.

Cita MLA (9th ed.)

Kaufman, Leonard, i Peter J. Rousseeuw. Finding Groups in Data: An Introduction to Cluster Analysis. Wiley, 1990.