Gaya APA
Conversational : Book Two. (1980).
Singapore:
EPB.
Gaya Chicago
Conversational : Book Two.
.
Singapore:
EPB,
1980.
Text.
Gaya MLA
Conversational : Book Two.
.
Singapore:
EPB,
1980.
Text.
Gaya Turabian
Conversational : Book Two.
Singapore:
EPB,
1980.
Print.