APA Style
Ridout, Ronald. (1960).
Internasional english 4 .
London:
Macmillan and Co.
Chicago Style
Ridout, Ronald.
Internasional english 4.
London:
Macmillan and Co,
1960.
Text.
MLA Style
Ridout, Ronald.
Internasional english 4.
London:
Macmillan and Co,
1960.
Text.
Turabian Style
Ridout, Ronald.
Internasional english 4.
London:
Macmillan and Co,
1960.
Print.