Harrison, B. English as a second and foreign language.
芝加哥风格引文Harrison, Brian. English as a Second and Foreign Language.
MLA引文Harrison, Brian. English as a Second and Foreign Language.
警告：这些引文格式不一定是100％准确.
APA引文
Harrison, B. English as a second and foreign language.
芝加哥风格引文Harrison, Brian. English as a Second and Foreign Language.
MLA引文Harrison, Brian. English as a Second and Foreign Language.