APA (7th ed.) Citation

Gusnidar. (2003). WINDOW ON THE WORLD A New Approach to Learning English for SMU year 1 Semester System. Erlangga.

Chicago Style (17th ed.) Citation

Gusnidar. WINDOW ON THE WORLD A New Approach to Learning English for SMU Year 1 Semester System. Erlangga, 2003.

MLA (8th ed.) Citation

Gusnidar. WINDOW ON THE WORLD A New Approach to Learning English for SMU Year 1 Semester System. Erlangga, 2003.

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