some relevant literature:
Austin, Peter K., ed. 2003-2008. Language documentation and description, volume 1-5 of Language Documentation and Description. London: SOAS, University of London.
Bowern, Claire. 2008. Linguistic !eld work: A practical guide. Hampshire: Palgrave MacMillan.
Gippert, Jost, Ulrike Mosel, Nikolaus Himmelmann, eds. 2006. Essentials of language documentation. Trends in Linguistics / Studies and Monographs. Berlin: Mouton de Gruyter.
Gussenhoven, Carlos, and Haike Jacobs. 1998. Understanding phonology. Understanding Language Series. London: Arnold.
Haspelmath, Martin. 2002. Understanding morphology. Understanding Language Series. London: Arnold.
Ladefoged, Peter. 1975. A course in phonetics. New York: Harcourt Brace Jovanovich, Inc.
Lagercrantz, Eliel. 1926. Sprachlehre des Westlappischen nach der Mundart von Arjeplog. Suomalais-ugrilaisen seuran toimituksia: LV. Helsinki: Suomalais-ugrilaisen seuran toimituksia.
Lehtiranta, Juhani. 1992. Arjeploginsaamen äänne- ja taivutusopin pääpiirteet. Suomalais-ugrilaisen seuran toimituksia: 212. Helsinki: Suomalais-ugrilainen seura toimituksia.
Payne, Thomas E. 1997. Describing morphosyntax: A guide for field linguists. Cambridge: Cambridge University Press.
Rießler, Michael, and Joshua Wilbur. 2007. Documenting the Endangered Kola Saami Languages. In Språk og språkforhold i Sápmi, ed. Tove Bull, Jurij Kus menko, and Michael Rießler, number 10 in Berliner Beiträge zur Skandinavistik, 39-82. Berlin: Humboldt-Universität. [PDF 7MB]
Sammallahti, Pekka. 1998. The Saami Languages: An Introduction. Kárášjohka: Davvi Girji.
Simons, Steven Bird; Gary. 2003. Seven dimensions of portability for language documentation and description. Language 79:557-582.