APA সাইটেশন

Nohlert, E., Öhrvik, J., & Helgason, Á. R. (2014). Effectiveness of proactive and reactive services at the Swedish National Tobacco Quitline in a randomized trial. BioMed Central.

শিকাগো স্টাইলে সাইটেশন

Nohlert, Eva, John Öhrvik, এবং Ásgeir R. Helgason. Effectiveness of Proactive and Reactive Services At the Swedish National Tobacco Quitline in a Randomized Trial. BioMed Central, 2014.

এমএলএ সাইটেশন

Nohlert, Eva, John Öhrvik, এবং Ásgeir R. Helgason. Effectiveness of Proactive and Reactive Services At the Swedish National Tobacco Quitline in a Randomized Trial. BioMed Central, 2014.