Gaya APA

Sheedy, J, E., Shaw-McMinn, P, G. (2002). Diagnosing and treating computer-related vision problems . Massachusetts: Butterworth-heinemann.

Gaya MLA

Sheedy, James, E.., Shaw-McMinn, Peter, G.. "Diagnosing and treating computer-related vision problems". Massachusetts: Butterworth-heinemann, 2002. E-book.