Gaya APA
Susilo, G, S.
(1995).
Yogyakarta Bussiness Directory 1995
.
Yogyakarta:
PT. Karipta.
Gaya MLA
Susilo, Gatot, Setyo.
"Yogyakarta Bussiness Directory 1995".
Yogyakarta:
PT. Karipta,
1995.
Book.