APA引文

Yorkey, R. C. (1977). English for international communication. Jilid 2. American Book.

Chicago Style (17th ed.) Citation

Yorkey, Richard C. English for International Communication. Jilid 2. American Book, 1977.

MLA引文

Yorkey, Richard C. English for International Communication. Jilid 2. American Book, 1977.

警告：這些引文格式不一定是100％准確.