Bowker, A. H., & Lieberman, G. J. (1955). Handbook of industrial statistics. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Bowker, Albert Hosmer, agus Gerald J. Lieberman. Handbook of Industrial Statistics. Englewood Cliffs, N.J.: Prentice-Hall, 1955.
Lua MLA (8ú heag.)Bowker, Albert Hosmer, agus Gerald J. Lieberman. Handbook of Industrial Statistics. Prentice-Hall, 1955.
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