APA (7th ed.) Citation

Chaouachi Kamal, Sajid Khan, & Mahmood Rubaida. (2008). Hookah smoking and cancer: Carcinoembryonic antigen (CEA) levels in exclusive/ever hookah smokers. BMC.

Chicago Style (17th ed.) Citation

Chaouachi Kamal, Sajid Khan, and Mahmood Rubaida. Hookah Smoking and Cancer: Carcinoembryonic Antigen (CEA) Levels in Exclusive/ever Hookah Smokers. BMC, 2008.

MLA (9th ed.) Citation

Chaouachi Kamal, et al. Hookah Smoking and Cancer: Carcinoembryonic Antigen (CEA) Levels in Exclusive/ever Hookah Smokers. BMC, 2008.

Warning: These citations may not always be 100% accurate.