(1992). Readings In Marketing Management Edited By Philip Kotler; Keith K.cox. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Readings In Marketing Management Edited By Philip Kotler; Keith K.cox. Prentice-Hall, 1992.
Lua MLA (8ú heag.)Readings In Marketing Management Edited By Philip Kotler; Keith K.cox. Prentice-Hall, 1992.
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