Gould, F. (1991). Introductory Management Science F.j. Gould; G.d. Eppend And C.p. Schmidt. Prentice - Hall.
Lua i Stíl Chicago (17ú heag.)Gould, F.J. Introductory Management Science F.j. Gould; G.d. Eppend And C.p. Schmidt. Prentice - Hall, 1991.
Lua MLA (8ú heag.)Gould, F.J. Introductory Management Science F.j. Gould; G.d. Eppend And C.p. Schmidt. Prentice - Hall, 1991.
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