Cita APA (7a ed.)

Office, E. (1948). Excercises and the tired back. AOSIS.

Cita Chicago Style (17a ed.)

Office, Editorial. Excercises and the Tired Back. AOSIS, 1948.

Cita MLA (8a ed.)

Office, Editorial. Excercises and the Tired Back. AOSIS, 1948.