Hafen, B. Q., Karren, K. J., & Frandsen, K. J. (1999). First aid for colleges and universities (7th ed.). Boston: Allyn and Bacon.
Chicago Style citaatHafen, Brent Q., Keith J. Karren, en Kathryn J. Frandsen. First Aid for Colleges and Universities. 7th ed. Boston: Allyn and Bacon, 1999.
MLA citatieHafen, Brent Q., Keith J. Karren, en Kathryn J. Frandsen. First Aid for Colleges and Universities. 7th ed. Boston: Allyn and Bacon, 1999.
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