Bishop, D., & Bishop, S. (1998). "Twin language": A risk factor for language impairment?
Cita Chicago (17th ed.)Bishop, D., i S. Bishop. "Twin Language": A Risk Factor for Language Impairment? 1998.
Cita MLA (9th ed.)Bishop, D., i S. Bishop. "Twin Language": A Risk Factor for Language Impairment? 1998.
Atenció: Aquestes cites poden no estar 100% correctes.