Gaya APA
Putri, H, H, J., Aruan, L.
(2021).
Deutsch fur tourismus
.
Medan:
fbs unimed press.
Gaya MLA
Putri, Harahap., Herlina, Jasa., Aruan, Linda.
"Deutsch fur tourismus".
Medan:
fbs unimed press,
2021.
Art Original.