Yin, Robert K.
Case study research : design and methods
Sage, 1989
 Buku Teks SO
Case study method: key issues, key texts
edited by Roger Gomm, Martyn Hammersley and Peter Foster
Sage, 2000
 Buku Teks SO
Travers, Max
Qualitative research through case studies
Sage Publications, 2002
 Buku Teks SO
May, Tim
Social research: issues, methods and process
Open University Press, 2001
 Buku Teks SO
Lee, Raymond M.
Unobtrusive methods in social research
Open University Press, 2000
 Buku Teks SO