Educational Testing Services. (2012). The official guide to the TOEFL test (4th ed.). McGraw-Hill ; Tata McGraw Hill.
芝加哥风格引文Educational Testing Services. The Official Guide to the TOEFL Test. 4th ed. New York : New Delhi: McGraw-Hill ; Tata McGraw Hill, 2012.
MLA引文Educational Testing Services. The Official Guide to the TOEFL Test. 4th ed. McGraw-Hill ; Tata McGraw Hill, 2012.
警告：这些引文格式不一定是100％准确.