APA Style
Ridout, Ronald. (1961).
Internasional english 1 .
London:
Macmillan and Co.
Chicago Style
Ridout, Ronald.
Internasional english 1.
London:
Macmillan and Co,
1961.
Text.
MLA Style
Ridout, Ronald.
Internasional english 1.
London:
Macmillan and Co,
1961.
Text.
Turabian Style
Ridout, Ronald.
Internasional english 1.
London:
Macmillan and Co,
1961.
Print.