Gaya APA
Walidi, S.Pd. (2006).
Step by Step to Speak English (Cetakan ke 1).
Yogyakarta:
Citra Aji Parama.
Gaya Chicago
Walidi, S.Pd.
Step by Step to Speak English.
Cetakan ke 1
Yogyakarta:
Citra Aji Parama,
2006.
Text.
Gaya MLA
Walidi, S.Pd.
Step by Step to Speak English.
Cetakan ke 1
Yogyakarta:
Citra Aji Parama,
2006.
Text.
Gaya Turabian
Walidi, S.Pd.
Step by Step to Speak English.
Cetakan ke 1
Yogyakarta:
Citra Aji Parama,
2006.
Print.