Gaya APA
Koch, Rachel Spack. (2012).
Focus on Grammar 5 .
New York:
Pearson Education, Inc.
Gaya Chicago
Koch, Rachel Spack.
Focus on Grammar 5.
New York:
Pearson Education, Inc,
2012.
Text.
Gaya MLA
Koch, Rachel Spack.
Focus on Grammar 5.
New York:
Pearson Education, Inc,
2012.
Text.
Gaya Turabian
Koch, Rachel Spack.
Focus on Grammar 5.
New York:
Pearson Education, Inc,
2012.
Print.