Cita APA

Churchyard, G., Ehrlich, R., teWaterNaude, J., Pemba, L., Dekker, K., Vermeijs, M., . . . Myers, J. (2004). Silicosis prevalence and exposure-response relations in South African goldminers. BMJ Group.

Citación estilo Chicago

Churchyard, G., R. Ehrlich, J. teWaterNaude, L. Pemba, K. Dekker, M. Vermeijs, N. White, y J. Myers. Silicosis Prevalence and Exposure-response Relations in South African Goldminers. BMJ Group, 2004.

Cita MLA

Churchyard, G., et al. Silicosis Prevalence and Exposure-response Relations in South African Goldminers. BMJ Group, 2004.