Gaya APA
Langan, John. (c2012).
English skills with readings (8th ed.).
:
McGraw-Hill Higher Education.
Gaya Chicago
Langan, John.
English skills with readings.
8th ed.
:
McGraw-Hill Higher Education,
c2012.
.
Gaya MLA
Langan, John.
English skills with readings.
8th ed.
:
McGraw-Hill Higher Education,
c2012.
.
Gaya Turabian
Langan, John.
English skills with readings.
8th ed.
:
McGraw-Hill Higher Education,
c2012.
.