Cita APA (7a ed.)

Fisher, D. H., Langley, P., & Pazzani, M. J. (1991). Concept formation: Knowledge and experience in unsupervised learning. Morgan Kaufmann.

Cita Chicago Style (17a ed.)

Fisher, Douglas H., Pat Langley, y Michael J. Pazzani. Concept Formation: Knowledge and Experience in Unsupervised Learning. San Mateo, California: Morgan Kaufmann, 1991.

Cita MLA (9a ed.)

Fisher, Douglas H., et al. Concept Formation: Knowledge and Experience in Unsupervised Learning. Morgan Kaufmann, 1991.