Gaya APA
Fitrini, Erna. (2009).
I Speak English .
Surabaya:
Penerbit SIC.
Gaya Chicago
Fitrini, Erna.
I Speak English.
Surabaya:
Penerbit SIC,
2009.
Text.
Gaya MLA
Fitrini, Erna.
I Speak English.
Surabaya:
Penerbit SIC,
2009.
Text.
Gaya Turabian
Fitrini, Erna.
I Speak English.
Surabaya:
Penerbit SIC,
2009.
Print.