APA-čujuhus (7. p.)

Stead, L., Perera, R., & Lancaster, T. (2007). A systematic review of interventions for smokers who contact quitlines.

Chicago-čujuhus (17. p.)

Stead, L., R. Perera, juo T. Lancaster. A Systematic Review of Interventions for Smokers Who Contact Quitlines. 2007.

MLA-čujuhus (9. p.)

Stead, L., et al. A Systematic Review of Interventions for Smokers Who Contact Quitlines. 2007.

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