Gaya APA
Subroto, B.
(2011).
Pemasaran industri : business to business marketing
(
1 st edition)
.
Yogyakarta:
Andi.
Gaya MLA
Subroto, Budiarto.
"Pemasaran industri : business to business marketing".
1 st edition
Yogyakarta:
Andi,
2011.
Text.