Cita APA (7a ed.)

Atherton, P., & Christian, R. W. (1977). Librarians and online services. Knowledge Industry.

Cita Chicago Style (17a ed.)

Atherton, Pauline, y Roger W. Christian. Librarians and Online Services. White Plains, N. Y: Knowledge Industry, 1977.

Cita MLA (9a ed.)

Atherton, Pauline, y Roger W. Christian. Librarians and Online Services. Knowledge Industry, 1977.