APA (7th ed.) Citation

Hauge, R. (1999). Problems in comparative statistical studies of drugs. Current and future drug policy studies in Europe, 45-68.

Chicago Style (17th ed.) Citation

Hauge, Ragnar. "Problems in Comparative Statistical Studies of Drugs." Current and Future Drug Policy Studies in Europe 1999: 45-68.

MLA (9th ed.) Citation

Hauge, Ragnar. "Problems in Comparative Statistical Studies of Drugs." Current and Future Drug Policy Studies in Europe, 1999, pp. 45-68.