Gaya APA
Hilal, Z, M. (2004).
Competency Standard Progress; A Contextual Approach to Learning English an Textbook 1 .
Jakarta:
Gajayana.
Gaya MLA
Hilal, Zumakhsin;, Madji;.
"Competency Standard Progress; A Contextual Approach to Learning English an Textbook 1".
Jakarta:
Gajayana,
2004.
Text.