Allen, D. N. d. G. (1954). Relaxation methods. McGraw-Hill.
Chicago Style aipamenaAllen, Deryck Norman de Garrs. Relaxation Methods. New York: McGraw-Hill, 1954.
MLA aipamenaAllen, Deryck Norman de Garrs. Relaxation Methods. McGraw-Hill, 1954.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.