Cita APA

Hart, H. H., Grigor, R. R., & Caughey, D. E. (1983). Ethnic difference in the prevalence of systemic lupus erythematosus.

Chicago Style Citation

Hart, H H., R R. Grigor, i D E. Caughey. Ethnic Difference in the Prevalence of Systemic Lupus Erythematosus. 1983.

Cita MLA

Hart, H H., R R. Grigor, i D E. Caughey. Ethnic Difference in the Prevalence of Systemic Lupus Erythematosus. 1983.