Gaya APA
BORDENS, K, S., ABBOTT, B, B.
(2014).
Research design and methods :
(
9th ed.)
.
NY:
Mc Graw Hill.
Gaya MLA
BORDENS, Kenneth, S.., ABBOTT, Bruce, B..
"Research design and methods :".
9th ed.
NY:
Mc Graw Hill,
2014.
Buku.