Rossman, Gretchen B. Learning in the field : - 3rd ed. - Thousand Oaks, Calif. : SAGE, 2012. - xxv, 365 p. : ill. ; ISBN: 9781412980487 (pbk.) 1412980488 (pbk.) Subjects--Topical Terms: Social sciencesQualitative reasoning. LC Class. No.: MED. H62 / .R66