Patton, M. Q.
Qualitative research and evaluation methods. 3rd. edn. - Thousand Oaks Sage Publications 2002 - xxiv, ca 625p.
978-0-7619-1971-1
Qualitative research and evaluation methods. 3rd. edn. - Thousand Oaks Sage Publications 2002 - xxiv, ca 625p.
978-0-7619-1971-1