Παραπομπή APA

Campbell, C., & Colin Campbell; Kathy Gude; JaMichael Duckworth. (2002). Matrix: Pre-Intermediate (Teacher's book). Oxford: Oxford University Press.

Παραπομπή Chicago Style

Campbell, Colin, και Colin Campbell; Kathy Gude; JaMichael Duckworth. Matrix: Pre-Intermediate (Teacher's Book). Oxford: Oxford University Press, 2002.

Παραπομπή MLA

Campbell, Colin, και Colin Campbell; Kathy Gude; JaMichael Duckworth. Matrix: Pre-Intermediate (Teacher's Book). Oxford: Oxford University Press, 2002.

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