Steffen, R., DuPont, H. L., & Wilder-Smith, A. (2007). Manual of travel medicine and health (3rd ed.). BC Decker.
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Dyfyniad Arddull Chicago
Steffen, Robert, Herbert L. DuPont, and Annelies Wilder-Smith. Manual of Travel Medicine and Health. 3rd ed. Hamilton, Ont.: BC Decker, 2007.
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Dyfyniad MLA
Steffen, Robert, et al. Manual of Travel Medicine and Health. 3rd ed. BC Decker, 2007.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.