Educational Testing Services. (2012). The official guide to the TOEFL test (4th ed.). McGraw-Hill ; Tata McGraw Hill.
Chicagoスタイル(17版)引用形式Educational Testing Services. The Official Guide to the TOEFL Test. 4th ed. New York : New Delhi: McGraw-Hill ; Tata McGraw Hill, 2012.
MLA(8版)引用形式Educational Testing Services. The Official Guide to the TOEFL Test. 4th ed. McGraw-Hill ; Tata McGraw Hill, 2012.
警告: この引用は必ずしも正確ではありません.