Gaya APA
CRESWELL, J, W., FAWAID, A, [.
(2012).
Research design :
(
Cet. 2)
.
Jakarta:
Pustaka Pelajar.
Gaya MLA
CRESWELL, John, W.., FAWAID, Achmad, [penerj.].
"Research design :".
Cet. 2
Jakarta:
Pustaka Pelajar,
2012.
Buku.