APA引文

Kral, T. (2005). Discover America ( An integrated skills text for intermadiate / Advanced students of English as a foreign language ). Washington D.C: United States Department of State.

Trích dẫn kiểu Chicago

Kral, Thomas. Discover America ( An Integrated Skills Text for Intermadiate / Advanced Students of English As a Foreign Language ). Washington D.C: United States Department of State, 2005.

MLA引文

Kral, Thomas. Discover America ( An Integrated Skills Text for Intermadiate / Advanced Students of English As a Foreign Language ). Washington D.C: United States Department of State, 2005.

警告：這些引文格式不一定是100％准確.