Brinton, E., & Plumb, W. (1980). Active context English. Book 3. The Macmillan Press Limited.
Chicago Style (17th ed.) CitationBrinton, Ethel, and Walter Plumb. Active Context English. Book 3. Londres: The Macmillan Press Limited, 1980.
MLA (9th ed.) CitationBrinton, Ethel, and Walter Plumb. Active Context English. Book 3. The Macmillan Press Limited, 1980.
Warning: These citations may not always be 100% accurate.