Gaya APA

Schoenberg, Irene E.. (2002). Focus on grammar: an introductory course for reference and practice / Irene E. Schoenberg, Jay Maurer . : New York: Pearson Education.

Gaya Chicago

Schoenberg, Irene E.. Focus on grammar: an introductory course for reference and practice / Irene E. Schoenberg, Jay Maurer. : New York: Pearson Education, 2002. Buku.

Gaya MLA

Schoenberg, Irene E.. Focus on grammar: an introductory course for reference and practice / Irene E. Schoenberg, Jay Maurer. : New York: Pearson Education, 2002. Buku.

Gaya Turabian

Schoenberg, Irene E.. Focus on grammar: an introductory course for reference and practice / Irene E. Schoenberg, Jay Maurer. : New York: Pearson Education, 2002. Buku.