Gaya APA
Sheeler, Willard D.. (1977).
Welcome to English Book 6 .
:
English Language Service.
Gaya Chicago
Sheeler, Willard D..
Welcome to English Book 6.
:
English Language Service,
1977.
Text.
Gaya MLA
Sheeler, Willard D..
Welcome to English Book 6.
:
English Language Service,
1977.
Text.
Gaya Turabian
Sheeler, Willard D..
Welcome to English Book 6.
:
English Language Service,
1977.
Print.