Gaya APA
Sikumbank, R, F., Abimanyu, Y.
(2004).
Ekonomi Manajerial
.
Bogor:
Ghalia Indonesia.
Gaya MLA
Sikumbank, Risman, F., Abimanyu, Yoopi.
"Ekonomi Manajerial".
Bogor:
Ghalia Indonesia,
2004.
Text.