Gaya APA
Wlas, Lasdin. (1989).
Cakrawala .
Yogyakarta:
Liberty Yogyakarta.
Gaya Chicago
Wlas, Lasdin.
Cakrawala.
Yogyakarta:
Liberty Yogyakarta,
1989.
Text.
Gaya MLA
Wlas, Lasdin.
Cakrawala.
Yogyakarta:
Liberty Yogyakarta,
1989.
Text.
Gaya Turabian
Wlas, Lasdin.
Cakrawala.
Yogyakarta:
Liberty Yogyakarta,
1989.
Print.