Cita APA

Simpson, T., Heard, B., & Laws, J. W. (1963). Severe Irreversible Airways Obstruction Without Emphysema.

Citación estilo Chicago

Simpson, T., B. Heard, y J. W. Laws. Severe Irreversible Airways Obstruction Without Emphysema. 1963.

Cita MLA

Simpson, T., B. Heard, y J. W. Laws. Severe Irreversible Airways Obstruction Without Emphysema. 1963.