Cita APA

Richards, A. J. (1974). Ankylosing spondylitis and pulmonary apical fibrosis.

Citación estilo Chicago

Richards, A J. Ankylosing Spondylitis and Pulmonary Apical Fibrosis. 1974.

Cita MLA

Richards, A J. Ankylosing Spondylitis and Pulmonary Apical Fibrosis. 1974.