The Cross-Lingual Dimensions of Language Proficiency: Implications for Bilingual Education and the Optimal Age Issue. Cummins, J. TESOL Quarterly, 14(2):175, 1980.
doi  bibtex   
@article{cummins_cross-lingual_1980,
	title = {The {Cross}-{Lingual} {Dimensions} of {Language} {Proficiency}: {Implications} for {Bilingual} {Education} and the {Optimal} {Age} {Issue}},
	volume = {14},
	issn = {00398322},
	doi = {10.2307/3586312},
	number = {2},
	journal = {TESOL Quarterly},
	author = {Cummins, J.},
	year = {1980},
	pages = {175},
}

Downloads: 0