Cita APA (7a ed.)

Allen, D. N. d. G. (1954). Relaxation methods. McGraw-Hill.

Cita Chicago Style (17a ed.)

Allen, D. N. de G. Relaxation Methods. New York: McGraw-Hill, 1954.

Cita MLA (9a ed.)

Allen, D. N. de G. Relaxation Methods. McGraw-Hill, 1954.