Gaya APA
WIDARTI, S.
(2001).
Operasional Coffe Shop Wiryo Widagdo Hotel Quality Solo
.
Surakarta:
STP Sahid Surakarta.
Gaya MLA
WIDARTI, Sri.
"Operasional Coffe Shop Wiryo Widagdo Hotel Quality Solo".
Surakarta:
STP Sahid Surakarta,
2001.
Text.