Cita APA (7a ed.)

Extra, G. (1990). Ethnic minorities, language diversity, and educational implications, a case study on the Netherlans. [s.n.].

Cita Chicago Style (17a ed.)

Extra, Guus. Ethnic Minorities, Language Diversity, and Educational Implications, a Case Study on the Netherlans. [S.l.]: [s.n.], 1990.

Cita MLA (9a ed.)

Extra, Guus. Ethnic Minorities, Language Diversity, and Educational Implications, a Case Study on the Netherlans. [s.n.], 1990.