Cita APA (7a ed.)

Tenopir, C., & Cibbarelli, P. (1978). An Environmental Library System.

Cita Chicago Style (17a ed.)

Tenopir, Carol, y Pamela Cibbarelli. An Environmental Library System. 1978.

Cita MLA (9a ed.)

Tenopir, Carol, y Pamela Cibbarelli. An Environmental Library System. 1978.