Gaya APA
Walidi , Spd.. (2007).
Step By Step to Speak English .
Yogyakarta:
Yogyakarta.
Gaya Chicago
Walidi , Spd..
Step By Step to Speak English.
Yogyakarta:
Yogyakarta,
2007.
Text.
Gaya MLA
Walidi , Spd..
Step By Step to Speak English.
Yogyakarta:
Yogyakarta,
2007.
Text.
Gaya Turabian
Walidi , Spd..
Step By Step to Speak English.
Yogyakarta:
Yogyakarta,
2007.
Print.