Gaya APA
LANGFORD, I, D, A, A.
(2012).
ADVANCE ENGLISH GRAMMER A LINGUISTIC APPROCACH
.
india:
Prentice Hall.
Gaya MLA
LANGFORD, ILSE, DEPRAETERE, AND, AHAD.
"ADVANCE ENGLISH GRAMMER A LINGUISTIC APPROCACH".
india:
Prentice Hall,
2012.
Text.