Katz, R. L. (1970). Cases and concepts in corporate strategy. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Katz, Robert Lee. Cases and Concepts in Corporate Strategy. Englewood Cliffs, N.J: Prentice-Hall, 1970.
Lua MLA (9ú heag.)Katz, Robert Lee. Cases and Concepts in Corporate Strategy. Prentice-Hall, 1970.
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