APA Style
English Language Services, Inc.. (1970).
English 900 workbook four .
London:
The Macmillan Company.
Chicago Style
English Language Services, Inc..
English 900 workbook four.
London:
The Macmillan Company,
1970.
Text.
MLA Style
English Language Services, Inc..
English 900 workbook four.
London:
The Macmillan Company,
1970.
Text.
Turabian Style
English Language Services, Inc..
English 900 workbook four.
London:
The Macmillan Company,
1970.
Print.