Blackwell, J. C. (1988). Illicit drugs in Canada: A risky business. Nelson.
Cita Chicago Style (17a ed.)Blackwell, Judith C. Illicit Drugs in Canada: A Risky Business. Scarborough, Ontario: Nelson, 1988.
Cita MLA (9a ed.)Blackwell, Judith C. Illicit Drugs in Canada: A Risky Business. Nelson, 1988.
Precaución: Estas citas no son 100% exactas.