Yin, Robert K.
Case study research : design and methods
Sage, 1989
Buku Teks
Case study method: key issues, key texts
edited by Roger Gomm, Martyn Hammersley and Peter Foster
Sage, 2000
Buku Teks
Travers, Max
Qualitative research through case studies
Sage Publications, 2002
Buku Teks
May, Tim
Social research: issues, methods and process
Open University Press, 2001
Buku Teks
Judd, Charles M.
Research methods in social relations
Methuen, 1991
Buku Teks