APA (7th ed.) Citation
Extra, G., & Vallen, T. (1985). Ethnic Minorities and Dutch as a second language. Foris Publ.
Chicago Style (17th ed.) Citation
Extra, Guus, and Ton Vallen. Ethnic Minorities and Dutch as a Second Language. Dordrecht: Foris Publ, 1985.
MLA (9th ed.) Citation
Extra, Guus, and Ton Vallen. Ethnic Minorities and Dutch as a Second Language. Foris Publ, 1985.
Warning: These citations may not always be 100% accurate.