APA Style

Schoenberg, Irene E, Maurer, Jay. (2002). Focus on grammar: an introductory course for refence and practice . New York: Addison wesley Longman.

Chicago Style

Schoenberg, Irene E, Maurer, Jay. Focus on grammar: an introductory course for refence and practice. New York: Addison wesley Longman, 2002. Buku Teks.

MLA Style

Schoenberg, Irene E, Maurer, Jay. Focus on grammar: an introductory course for refence and practice. New York: Addison wesley Longman, 2002. Buku Teks.

Turabian Style

Schoenberg, Irene E, Maurer, Jay. Focus on grammar: an introductory course for refence and practice. New York: Addison wesley Longman, 2002. Buku Teks.