IVIS, F., & ADLAF, E. (1999). A COMPARISON OF TRENDS IN DRUG USE AMONG STUDENTS IN THE USA AND ONTARIO, CANADA: 1975-1997.
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Dyfyniad Arddull Chicago
IVIS, F.J, and E.M ADLAF. A COMPARISON OF TRENDS IN DRUG USE AMONG STUDENTS IN THE USA AND ONTARIO, CANADA: 1975-1997. 1999.
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Dyfyniad MLA
IVIS, F.J, and E.M ADLAF. A COMPARISON OF TRENDS IN DRUG USE AMONG STUDENTS IN THE USA AND ONTARIO, CANADA: 1975-1997. 1999.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.