APA Style
Schoenberg, Irene E.. (2001).
Focus on grammar: an introductory course for reference and practice .
Longman:
Longman.
Chicago Style
Schoenberg, Irene E..
Focus on grammar: an introductory course for reference and practice.
Longman:
Longman,
2001.
TXB.
MLA Style
Schoenberg, Irene E..
Focus on grammar: an introductory course for reference and practice.
Longman:
Longman,
2001.
TXB.
Turabian Style
Schoenberg, Irene E..
Focus on grammar: an introductory course for reference and practice.
Longman:
Longman,
2001.
TXB.