Starren, M., & Perdue, C. (1996). The European Science Foundation’s Second Language Database.
Cita Chicago (17th ed.)Starren, Marianne, i Clive Perdue. The European Science Foundation’s Second Language Database. 1996.
Cita MLA (8th ed.)Starren, Marianne, i Clive Perdue. The European Science Foundation’s Second Language Database. 1996.
Atenció: Aquestes cites poden no estar 100% correctes.