David P Harris. (1966). Reading improvement exercises for students of English as a second language. New Jersey: Prentice-Hall.
Παραπομπή Chicago StyleDavid P Harris. Reading Improvement Exercises for Students of English As a Second Language. New Jersey: Prentice-Hall, 1966.
Παραπομπή MLADavid P Harris. Reading Improvement Exercises for Students of English As a Second Language. New Jersey: Prentice-Hall, 1966.
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