American Psychological Association 7th edition

Sereny, G. (ca. 1974). Into that darkness : from mercy killing to mass murder [Book]. Deutsch.

Chicago Manual of Style 17th edition (author-date)

Sereny, Gitta. 1974. Into that darkness : from mercy killing to mass murder. Book. London: Deutsch.

Springer - Basic (author-date)

Sereny G (1974) Into that darkness : from mercy killing to mass murder. Deutsch, London

Springer - Lecture Notes in Computer Science

1.Sereny, G.: Into that darkness : from mercy killing to mass murder. Deutsch, London (1974).

DIN 1505-2 (author-date, Deutsch) - standard superseded by ISO-690

Sereny, Gitta ; ; ; : Into that darkness : from mercy killing to mass murder. book. London : Deutsch, 1974 — ISBN 0233965130

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.