Maurer, J. (2000). Focus on grammar: An advanced course for reference and practice (2a. ed.). Pearson Education.
Chicago Style (17th ed.) CitationMaurer, Jay. Focus on Grammar: An Advanced Course for Reference and Practice. 2a. ed. Nueva York: Pearson Education, 2000.
MLA (9th ed.) CitationMaurer, Jay. Focus on Grammar: An Advanced Course for Reference and Practice. 2a. ed. Pearson Education, 2000.
Warning: These citations may not always be 100% accurate.