Gaya APA
SIBUEA/2014010462030, R, M., Haywood, R.
(1987).
All about PR
(
1)
.
Singapore:
Mc Graw Hill.
Gaya MLA
SIBUEA/2014010462030, RANDY, MARULI., Haywood, Roger.
"All about PR".
1
Singapore:
Mc Graw Hill,
1987.
Text.