Bishop, D., & Bishop, S. (1998). "Twin language": A risk factor for language impairment?
芝加哥风格引文Bishop, D., 与 S. Bishop. "Twin Language": A Risk Factor for Language Impairment? 1998.
MLA引文Bishop, D., 与 S. Bishop. "Twin Language": A Risk Factor for Language Impairment? 1998.
警告：这些引文格式不一定是100％准确.