APA引文

PMcCallum, G. (1977). Seven plays from American literature. English LanguageServices.

芝加哥风格引文

PMcCallum, George. Seven Plays from American Literature. Culver City, Calif: English LanguageServices, 1977.

MLA引文

PMcCallum, George. Seven Plays from American Literature. English LanguageServices, 1977.

警告：这些引文格式不一定是100％准确.