Gaya APA
Ahrens, Patricia. (1977).
Tense Time Book 1 .
:
Longman.
Gaya Chicago
Ahrens, Patricia.
Tense Time Book 1.
:
Longman,
1977.
Text.
Gaya MLA
Ahrens, Patricia.
Tense Time Book 1.
:
Longman,
1977.
Text.
Gaya Turabian
Ahrens, Patricia.
Tense Time Book 1.
:
Longman,
1977.
Print.