Cita APA

Ryan, R. E. (1957). Headache, diagnosis and treatment Ed2 1957 (2nd ed.).

Citación estilo Chicago

Ryan, Robert E. Headache, Diagnosis and Treatment Ed2 1957. 2nd ed. 1957.

Cita MLA

Ryan, Robert E. Headache, Diagnosis and Treatment Ed2 1957. 2nd ed. 1957.

Warning: These citations may not always be 100% accurate.