Gaya APA
Robert.K.Yin, .
(2003).
Case Study Research:Design and methods
(
Ed.3., Cet.1)
.
New Delhi:
Sage Publications.
Gaya MLA
Robert.K.Yin, .
"Case Study Research:Design and methods".
Ed.3., Cet.1
New Delhi:
Sage Publications,
2003.
Buku.