Cita APA (7a ed.)

Ryder, R. J., & Hughes, T. (1997). Internet for educators. [S.n.].

Cita Chicago Style (17a ed.)

Ryder, Randall James, y Tom Hughes. Internet for Educators. Upper Saddle River: [S.n.], 1997.

Cita MLA (9a ed.)

Ryder, Randall James, y Tom Hughes. Internet for Educators. [S.n.], 1997.