Erthridge, J. M. (1979). Contemporary Authors: A Bibliographyical guide to curent authors and their works (ed.). Gale Research company.
Chicago-referens (17:e uppl.)Erthridge, James M. Contemporary Authors: A Bibliographyical Guide to Curent Authors and Their Works. ed. Michigan: Gale Research company, 1979.
MLA-referens (9:e uppl.)Erthridge, James M. Contemporary Authors: A Bibliographyical Guide to Curent Authors and Their Works. ed. Gale Research company, 1979.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.