Gaya APA
T. ().
Learning english .
SURABAYA:
Pustaka Agung Harapan Surabaya.
Gaya Chicago
T.
Learning english.
SURABAYA:
Pustaka Agung Harapan Surabaya,
.
Text.
Gaya MLA
T.
Learning english.
SURABAYA:
Pustaka Agung Harapan Surabaya,
.
Text.
Gaya Turabian
T.
Learning english.
SURABAYA:
Pustaka Agung Harapan Surabaya,
.
Print.