Carne, P., Jenkins, R., & Johnson, S. (2015). Grammar explorer. Boston: National Geographic Learning, Cengage Learning.
Chicago Style aipamenaCarne, Paul, Rob Jenkins, và Staci Johnson. Grammar Explorer. Boston: National Geographic Learning, Cengage Learning, 2015.
MLA aipamenaCarne, Paul, Rob Jenkins, và Staci Johnson. Grammar Explorer. Boston: National Geographic Learning, Cengage Learning, 2015.
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