LOUGHEED, L. (1986). Prentice Hall Toefl Prep Book. Prentice Hall.
Chicago Style (17th ed.) CitationLOUGHEED, Lin. Prentice Hall Toefl Prep Book. Prentice Hall, 1986.
MLA引文LOUGHEED, Lin. Prentice Hall Toefl Prep Book. Prentice Hall, 1986.
警告：这些引文格式不一定是100％准确.