Penggayaan APA
Sembiring. (1986).
Toefl A practical approach : book one structure and written expressions .
Jakarta:
Binacipta.
Chicago Style
Sembiring.
Toefl A practical approach : book one structure and written expressions.
Jakarta:
Binacipta,
1986.
Text.
MLA Style
Sembiring.
Toefl A practical approach : book one structure and written expressions.
Jakarta:
Binacipta,
1986.
Text.
Turabian Style
Sembiring.
Toefl A practical approach : book one structure and written expressions.
Jakarta:
Binacipta,
1986.
Print.