Lescher, J. F. (1995). Online market research: Cost-effective searching of the Internet and online databases. Addison-Wesley.
Lua i Stíl Chicago (17ú heag.)Lescher, John F. Online Market Research: Cost-effective Searching of the Internet and Online Databases. Reading, Mass: Addison-Wesley, 1995.
Lua MLA (9ú heag.)Lescher, John F. Online Market Research: Cost-effective Searching of the Internet and Online Databases. Addison-Wesley, 1995.
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