Boettcher,Jennifer C. (2004). Industry research using the economic census: How to find it, how to use it (NA.). Greenwood Press.
Lua i Stíl Chicago (17ú heag.)Boettcher,Jennifer C. Industry Research Using the Economic Census: How to Find It, How to Use It. NA. USA: Greenwood Press, 2004.
Lua MLA (9ú heag.)Boettcher,Jennifer C. Industry Research Using the Economic Census: How to Find It, How to Use It. NA. Greenwood Press, 2004.
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