Cita APA

Heller, R. F., Hayward, D. M., & Farebrother, M. T. (1986). Lung function of farmers in England and Wales.

Citación estilo Chicago

Heller, R F., D M. Hayward, y M T. Farebrother. Lung Function of Farmers in England and Wales. 1986.

Cita MLA

Heller, R F., D M. Hayward, y M T. Farebrother. Lung Function of Farmers in England and Wales. 1986.