Collier, R. (2017). Minors buy e-cigs online with ease. What about pot? CMAJ.
शिकागो स्टाइल उद्धरणCollier, Roger. "Minors Buy E-cigs Online With Ease. What About Pot?" CMAJ 2017.
एमएलए उद्धरणCollier, Roger. "Minors Buy E-cigs Online With Ease. What About Pot?" CMAJ 2017.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.