1. Standard DIN 1505 Teil 2 Entwurf April 1981. Gekürzte Titelangaben (Zitierregeln).
2. Standard BS 5605: 1978. Citing publications by bibliographical references.
3. Standard ISO 3388 1977-04-15. Patent documents — bibliographic references — essential and complementary elements.
4. Standard ANSI Z39.29-1977. American National Standard for bibliographic references.