Trích dẫn APA

Kral, T. (1994). Twelve famous Americans: Reading and listening skills text for students of English as a Foreign Language (Revised ed.). D.C.: U.S. Information Agency.

Trích dẫn kiểu Chicago

Kral, Thomas. Twelve Famous Americans: Reading and Listening Skills Text for Students of English As a Foreign Language. Revised ed. D.C.: U.S. Information Agency, 1994.

Trích dẫn MLA

Kral, Thomas. Twelve Famous Americans: Reading and Listening Skills Text for Students of English As a Foreign Language. Revised ed. D.C.: U.S. Information Agency, 1994.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.