Qualitative research :
studying how things work /
Robert E. Stake.
APA Citation
Stake, R. E. (2010). Qualitative research: studying how things work. New York: Guilford Press.
MLA Citation
Stake, Robert E. Qualitative Research: Studying How Things Work. New York: Guilford Press, 2010.
Warning: These citations may not always be complete (especially for serials).