APA (7th ed.) Citation

Silagy, C., Lancaster, T., Stead, L., Mant, D., & Fowler, G. (2002). Nicotine replacement therapy for smoking cessation.

Chicago Style (17th ed.) Citation

Silagy, C., T. Lancaster, L. Stead, D. Mant, and G. Fowler. Nicotine Replacement Therapy for Smoking Cessation. 2002.

MLA (9th ed.) Citation

Silagy, C., et al. Nicotine Replacement Therapy for Smoking Cessation. 2002.