APA aipamena

Spurgeon, D. (2004). Canada's teenagers less likely to smoke now than in 1999. BMJ Publishing Group Ltd.

Chicago Style aipamena

Spurgeon, David. Canada's Teenagers Less Likely to Smoke Now Than in 1999. BMJ Publishing Group Ltd, 2004.

MLA aipamena

Spurgeon, David. Canada's Teenagers Less Likely to Smoke Now Than in 1999. BMJ Publishing Group Ltd, 2004.