APA (7th ed.) Citation

ACTIVE.. & HOWE, D. d. (1979). Active english for Indonesia 1 for Sekolah Menengah Pertama.-- Ed.2. Oxford University Press.

Chicago Style (17th ed.) Citation

ACTIVE.. and D.H. dkk HOWE. Active English for Indonesia 1 for Sekolah Menengah Pertama.-- Ed.2. Oxford: Oxford University Press, 1979.

MLA (9th ed.) Citation

ACTIVE.. and D.H. dkk HOWE. Active English for Indonesia 1 for Sekolah Menengah Pertama.-- Ed.2. Oxford University Press, 1979.