Lado, R. (1978). Lado english series: Book 3. Regents Publishisng.
Cita Chicago (17th ed.)Lado, Robert. Lado English Series: Book 3. Regents Publishisng, 1978.
Cita MLA (9th ed.)Lado, Robert. Lado English Series: Book 3. Regents Publishisng, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.