Berenson, M. L., & Levine, D. M. (1989). Basic business statistics: Concepts and applications (4th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Berenson, Mark L., agus David M. Levine. Basic Business Statistics: Concepts and Applications. 4th ed. Englewood Cliffs: Prentice Hall, 1989.
Lua MLA (9ú heag.)Berenson, Mark L., agus David M. Levine. Basic Business Statistics: Concepts and Applications. 4th ed. Prentice Hall, 1989.
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