APA Style
English Language Services, Inc.. (1971).
English 900 workbook six .
London:
The Macmillan Company.
Chicago Style
English Language Services, Inc..
English 900 workbook six.
London:
The Macmillan Company,
1971.
Text.
MLA Style
English Language Services, Inc..
English 900 workbook six.
London:
The Macmillan Company,
1971.
Text.
Turabian Style
English Language Services, Inc..
English 900 workbook six.
London:
The Macmillan Company,
1971.
Print.