APA (7th ed.) Citation

O'Toole, J. M., & Society of American Archivists. (1990). Understanding archives and manuscripts. Society of American Archivists.

Chicago Style (17th ed.) Citation

O'Toole, James M., and Society of American Archivists. Understanding Archives and Manuscripts. Chicago: Society of American Archivists, 1990.

MLA (8th ed.) Citation

O'Toole, James M., and Society of American Archivists. Understanding Archives and Manuscripts. Society of American Archivists, 1990.