Qualitative Data by Auerbach and Silverstein. Been using the method for qualitative user research among staff and clients of multinationals for years. Best presentation of the systematic application of the method. Recently used it to create hypotheses about perception of internal publications in a bank. These can open the road to new ways of publishing internally.
Research Methods in Anthropology H. Russell Bernard. He is on his 4th ed. now.
And, for methods: Ethnography in Organizations by Schwartzman
Doing Anthropology in Consumer Research by Patricia L. Sunderland and Rita M.Denny.
(Paper) Contextmapping: experiences from practice by FROUKJE SLEESWIJK VISSER!, PIETER JAN STAPPERS, REMKO VAN DER LUGT
Design Research: Methods and Perspectives by Brenda Laurel
(Paper) Persuasive Encounters: Ethnography in the Corporation by Brigitte Jordan and Brinda Dalal
Ethnography: Step by Step, by David Fetterman (Sage Publications) Making Sense of Qualitative Data, by Amanda Coffey and Paul Atkinson (also Sage)
Cross-Cultural Filmmaking; A Handbook for Making Documentary and Ethnographic Films and Videos, by Ilisa Barbash and Lucien Taylor (University of California Press, 1997)
and my second favourite is Transcultural Cinema by David MacDougall, (Princetown University Press, 1998)
Through Navajo Eyes by Adair and Worth didn't make the list? -K.E.
From a business perspective: Doing Anthropology in Consumer Research. Patricia L. Sunderland and Rita M. Denny.