Coughlin, S. S., Katz, W. H., & Mattison, D. R. (1999). Ethics instruction at schools of public health in the United States. Association of Schools of Public Health Education Committee.
Dyfyniad Arddull ChicagoCoughlin, S S., W H. Katz, and D R. Mattison. Ethics Instruction At Schools of Public Health in the United States. Association of Schools of Public Health Education Committee. 1999.
Dyfyniad MLACoughlin, S S., W H. Katz, and D R. Mattison. Ethics Instruction At Schools of Public Health in the United States. Association of Schools of Public Health Education Committee. 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.