Cita APA

Gorkin, L., Hvidsten, K., Sobel, R., & Siegel, R. (2006). Sildenafil citrate use and the incidence of nonarteritic anterior ischemic optic neuropathy. Blackwell Publishing Ltd.

Chicago Style Citation

Gorkin, L., K. Hvidsten, RE Sobel, i R. Siegel. Sildenafil Citrate Use and the Incidence of Nonarteritic Anterior Ischemic Optic Neuropathy. Blackwell Publishing Ltd, 2006.

Cita MLA

Gorkin, L., K. Hvidsten, RE Sobel, i R. Siegel. Sildenafil Citrate Use and the Incidence of Nonarteritic Anterior Ischemic Optic Neuropathy. Blackwell Publishing Ltd, 2006.