Cita APA (7a ed.)

Guralnick, M. J. (1997). The effectiveness of early intervention. Brookes.

Cita Chicago Style (17a ed.)

Guralnick, Michael J. The Effectiveness of Early Intervention. Baltimore [etc.]: Brookes, 1997.

Cita MLA (9a ed.)

Guralnick, Michael J. The Effectiveness of Early Intervention. Brookes, 1997.