Butler, L., & Linda Butler. (2010). New password 4: A reading and vocabulary text. White Plains, NY: Pearson Longman.
Chicago Style aipamenaButler, Linda, và Linda Butler. New Password 4: A Reading and Vocabulary Text. White Plains, NY: Pearson Longman, 2010.
MLA aipamenaButler, Linda, và Linda Butler. New Password 4: A Reading and Vocabulary Text. White Plains, NY: Pearson Longman, 2010.
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