Hafen, B. Q., Karren, K. J., & Frandsen, K. J. (1999). First aid for colleges and universities (7th ed.). Boston: Allyn and Bacon.
Trích dẫn kiểu ChicagoHafen, Brent Q., Keith J. Karren, và Kathryn J. Frandsen. First Aid for Colleges and Universities. 7th ed. Boston: Allyn and Bacon, 1999.
MLA引文Hafen, Brent Q., Keith J. Karren, và Kathryn J. Frandsen. First Aid for Colleges and Universities. 7th ed. Boston: Allyn and Bacon, 1999.
警告:这些引文格式不一定是100%准确.