Cita APA (7th ed.)

Erthridge, J. M. (1979). Contemporary Authors: A Bibliographyical guide to curent authors and their works (ed.). Gale Research company.

Cita Chicago (17th ed.)

Erthridge, James M. Contemporary Authors: A Bibliographyical Guide to Curent Authors and Their Works. ed. Michigan: Gale Research company, 1979.

Cita MLA (9th ed.)

Erthridge, James M. Contemporary Authors: A Bibliographyical Guide to Curent Authors and Their Works. ed. Gale Research company, 1979.