Gaya APA
SIHOMBING, W, E.
(2018).
99 imperium bisnis
(
cet. 1)
.
Yogyakarta:
Quadrant.
Gaya MLA
SIHOMBING, Willy, Eka.
"99 imperium bisnis".
cet. 1
Yogyakarta:
Quadrant,
2018.
Text.